Fixed insttallation scripts

MANIFEST.in

@@ -1,3 +1 @@
-include DESCRIPTION.rst
-graft rapid
-prune rapid/migrations/
+include README.rst

setup.py

@@ -60,6 +60,8 @@ setup(
     packages=find_packages('src', exclude=['contrib', 'docs', 'tests*']),
     package_dir = {'': 'src'},
 
+    zip_safe = False,
+
     # List run-time dependencies here.  These will be installed by pip when
     # your project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see: