diff --git a/README.md b/README.md
index de1cf18..242aed2 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,10 @@ for jsx_path, js_path in my_paths:
 
 # For a single file, you can use a shortcut method.
 jsx.transform('path/to/input/file.jsx', js_path='path/to/output/file.js')
+
+# You can also define the path to react.
+transformer = jsx.JSXTransformer('path/to/react')
+jsx.transform('path/to/input/file.jsx', js_path='path/to/output/file.js', react_path='...')
 ```
 
 You can also use ``transform_string(jsx)`` method to transform strings:
diff --git a/react/__init__.py b/react/__init__.py
index 09a9e4d..cb412de 100644
--- a/react/__init__.py
+++ b/react/__init__.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/react/jsx.py b/react/jsx.py
index 070c6f4..cdf93a7 100644
--- a/react/jsx.py
+++ b/react/jsx.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,17 +14,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import os
+
 import execjs
-import react.source
 
 
 class JSXTransformer(object):
 
     JSX_TRANSFORMER_JS_EXPR = '(global.JSXTransformer || module.exports)'
+    react_path = os.path.abspath(os.path.join(__file__, 'js', 'react'))
 
-    def __init__(self):
-        path = react.source.path_for('JSXTransformer.js')
-        with open(path, 'rU') as f:
+    def __init__(self, react_path=None):
+        if react_path is not None:
+            self.react_path = react_path
+        with open(os.path.join(self.react_path, 'JSXTransformer.js'), 'rU') as f:
             self.context = execjs.compile(f.read())
 
     def transform_string(self, jsx, harmony=False, strip_types=False):
@@ -56,12 +61,14 @@ def transform(self, jsx_path, js_path=None, **kwargs):
 
 
 class TransformError(Exception):
-    def __init__(self, message):
-        Exception.__init__(self, message)
+    pass
 
 
 def transform(jsx_path, **opts):
-    return JSXTransformer().transform(jsx_path, **opts)
+    react_path = opts.pop('react_path', None)
+    return JSXTransformer(react_path=react_path).transform(jsx_path, **opts)
+
 
 def transform_string(jsx, **opts):
-    return JSXTransformer().transform_string(jsx, **opts)
+    react_path = opts.pop('react_path', None)
+    return JSXTransformer(react_path=react_path).transform_string(jsx, **opts)
diff --git a/react/source.py b/react/source.py
deleted file mode 100644
index d93b71d..0000000
--- a/react/source.py
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright 2013 Facebook, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from os.path import abspath, dirname, isfile, join
-
-
-JS_ROOT = abspath(join(dirname(__file__), 'js/react'))
-
-def path_for(react_file):
-    path = join(JS_ROOT, react_file)
-    if isfile(path):
-        return path
-    else:
-        raise IOError('%s: Could not find specified React file.' % path)
diff --git a/react/test/__init__.py b/react/test/__init__.py
index 064259a..a371e2c 100644
--- a/react/test/__init__.py
+++ b/react/test/__init__.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from os.path import dirname, abspath
-
+import os
 
-TEST_ROOT = abspath(dirname(__file__))
+TEST_ROOT = os.path.abspath(os.path.dirname(__file__))
diff --git a/react/test/__main__.py b/react/test/__main__.py
index 13be1bd..9240bf8 100644
--- a/react/test/__main__.py
+++ b/react/test/__main__.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,8 +17,6 @@
 from jsx import *
 from source import *
 
-import unittest
-
-
 if __name__ == '__main__':
-    unittest.main()
\ No newline at end of file
+    import unittest
+    unittest.main()
diff --git a/react/test/jsx.py b/react/test/jsx.py
index bd749bf..e4ba3c4 100644
--- a/react/test/jsx.py
+++ b/react/test/jsx.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,24 +14,25 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from os.path import join
+import os
+import unittest
+
 from react import jsx
 from react.test import TEST_ROOT
-from unittest import TestCase
 
 
-class TestJSXTransformer(TestCase):
+class TestJSXTransformer(unittest.TestCase):
 
     def test_transform(self):
-        jsx_path = join(TEST_ROOT, 'files/test.jsx')
-        js_path = join(TEST_ROOT, 'files/test.js')
+        jsx_path = os.path.join(TEST_ROOT, 'files/test.jsx')
+        js_path = os.path.join(TEST_ROOT, 'files/test.js')
 
         with open(js_path, 'rU') as js:
             self.assertEquals(
                 jsx.transform(jsx_path),
                 unicode(js.read()))
 
-        malformed_path = join(TEST_ROOT, 'files/malformed.jsx')
+        malformed_path = os.path.join(TEST_ROOT, 'files/malformed.jsx')
         self.assertRaises(
             jsx.TransformError,
             lambda: jsx.transform(malformed_path))
diff --git a/react/test/source.py b/react/test/source.py
deleted file mode 100644
index 7ae3b4c..0000000
--- a/react/test/source.py
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2013 Facebook, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from os.path import abspath, join
-from react import source
-from unittest import TestCase
-
-
-class TestSource(TestCase):
-    
-    def test_path_for(self):
-        JS_ROOT = source.JS_ROOT
-
-        self.assertEquals(
-            source.path_for('JSXTransformer.js'),
-            abspath(join(JS_ROOT, 'JSXTransformer.js')))
-
-        self.assertRaises(
-            IOError,
-            lambda: source.path_for('NonexistantFile.js'))
diff --git a/react/utils/pipeline.py b/react/utils/pipeline.py
index 7fc8932..6591027 100644
--- a/react/utils/pipeline.py
+++ b/react/utils/pipeline.py
@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 # Copyright 2013 Facebook, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,20 +20,21 @@
 from pipeline.exceptions import CompilerError
 from react.jsx import JSXTransformer, TransformError
 
+
 class JSXCompiler(CompilerBase):
+
     output_extension = 'js'
 
     def __init__(self, *args, **kwargs):
-        CompilerBase.__init__(self, *args, **kwargs)
+        super(JSXCompiler, self).__init__(*args, **kwargs)
         self.transformer = JSXTransformer()
 
     def match_file(self, path):
         return path.endswith('.jsx')
 
     def compile_file(self, infile, outfile, outdated=False, force=False):
-        if not outdated and not force:
-            return
-        try:
-            return self.transformer.transform(infile, outfile)
-        except TransformError as e:
-            raise CompilerError(str(e))
+        if outdated or force:
+            try:
+                return self.transformer.transform(infile, outfile)
+            except TransformError as e:
+                raise CompilerError(str(e))
diff --git a/setup.py b/setup.py
index 59ab67b..1125b89 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,7 @@
+# -*- encoding: utf-8 -*-
+
 from setuptools import setup, find_packages
+
 from react import VERSION
 
 
@@ -11,7 +14,7 @@
     license='Apache-2.0',
     description='Python bridge to JSX & the React JavaScript library.',
     long_description=open('DESCRIPTION').read(),
-    classifiers =[
+    classifiers=[
         'Development Status :: 4 - Beta',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: Apache Software License',