Storages are not installed

* setup.py: Add storages to packages.

setup.py

@@ -3,6 +3,9 @@
 from distutils.core import setup
 
 
+PACKAGES = ['tiramisu', 'tiramisu.storage', 'tiramisu.storage.dictionary',
+            'tiramisu.storage.sqlite3']
+
 def fetch_version():
     """Get version from version.in"""
     return file('VERSION', 'r').readline().strip()
@@ -15,7 +18,7 @@ setup(
     version=fetch_version(),
     description='an options controller tool',
     url='http://tiramisu.labs.libre-entreprise.org/',
-    packages=['tiramisu'],
+    packages=PACKAGES,
     classifiers=[
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",