Fixes packaging

Author: sdispater

MANIFEST.in

@@ -1,3 +1,2 @@
 include README.rst LICENSE
-recursive-exclude tests *
-recursive-exclude benchmark *
+exclude test*

setup.py

@@ -67,6 +67,9 @@ def build_extension(self, ext):
                 DistutilsPlatformError, ValueError):
             raise BuildFailed()
 
+packages = ['pendulum']
+for pkg in find_packages('pendulum'):
+    packages.append('pendulum.' + pkg)
 
 kwargs = dict(
     name='pendulum',
@@ -78,7 +81,7 @@ def build_extension(self, ext):
     author_email='sebastien@eustace.io',
     url='https://github.com/sdispater/pendulum',
     download_url='https://github.com/sdispater/pendulum/archive/%s.tar.gz' % __version__,
-    packages=find_packages(exclude=['tests']),
+    packages=packages,
     install_requires=[
         'tzlocal',
         'python-dateutil',