Let git ingnore some standard files
Adds an album name blacklist.

In settings.py you can now add album names to 'FB_GALLERY_BLACKLIST'
and those will not show up. This is handy to exclude 'Timeline Photos',
'Cover Photos' and 'Profile Pictures', which are included by default.
Add src_big and photo_count in the photo album query

This gives more choice in the template:
- src_big is a higher resolution cover photo
- photo_count is the number of photo's in the album
Adds django-cms app hook
Adds version number mechanism to work well with git

When installing with pip from repo, the version number
now shows you how many commits you are away from the
latest tagged version.
Adds link to documentation in README
Merge branch 'develop'