added basic CRUD to groups
added Devise gem and functionality
added basic CRUD to users, added users resources, and added part of the database relations of users, members, and group.
Merged master branch into side branch to get Twitter functionality
modified groups index page adding creating and deleting ability
added basic views to group CRUDand validation for group name
no changes, just white space
Merge pull request #1 from SIBClusters/BasicGroupFunctionality

Basic group functionality (create, update, and delete), validation for group, and index and new.html files. Add devise gem.