Adds Squad model
Adds validation to Squad (name with presence => true)
ADds group field to squads
Populates Squads
Adds squads list index
Adds _squad partial to show squads info
Adds hero unit layout to index page
Adds player model
Adds page header partial
Adds tweetstream
Adds tweet stream rake
Merge branch 'tweetstream' into development
Adds Tweet polymorphic model
Updates relations between Tweet and Squad, Players
Adds date field to Tweet
Adds validates presence of text and date to Tweet
Adds migration to populates some players
Populates fake positive percentage for dev mode
Adds table to show players
Merge branch 'development'