Fix getResource when apachedex/__init__.py is invoked directly.

apachedex/__init__.py

@@ -1534,4 +1534,11 @@ def main():
     )
 
 if __name__ == '__main__':
+  __resource_base = os.path.join(*os.path.split(__file__)[:-1])
+  def getResource(name, encoding='utf-8'):
+    return codecs.open(
+      os.path.join(__resource_base, name),
+      encoding=encoding,
+    ).read()
+
   main()