Adds missing include_package_data directive

Author: Alan Christie

setup.py

@@ -33,6 +33,7 @@ def get_long_description():
 
     # Our modules to package
     packages=['decoder'],
+    include_package_data=True,
 
     # Project classification:
     # https://pypi.python.org/pypi?%3Aaction=list_classifiers