added communities table and community_id column to tutorials
erge branch 'master' of https://github.com/nealcpeters/infobytes into add_communities
community and tutorial associations updated
added communities routes and index view
Merge branch 'master' of https://github.com/nealcpeters/infobytes into add_communities
added show view, updated seed file, corrected model naming error
Merge branch 'master' of https://github.com/nealcpeters/infobytes into add_communities
added functionality to create new community
added join community button
add js for stickybar
Merge branch 'master' of https://github.com/nealcpeters/infobytes into sticky-nav
Merge pull request #121 from nealcpeters/add_communities

Add communities
style sticky nav
Merge branch 'master' of https://github.com/nealcpeters/infobytes into sticky-nav
Merge pull request #122 from nealcpeters/sticky-nav

Sticky nav
Merge branch 'master' of https://github.com/nealcpeters/infobytes into index_ajax