changed the name of the Controller and the associated Model, Views, Helpers, Tests & Routes directories, file names, class names & the names in the class definitions from Hangout -> EventInstance
removed doublequotes
jasmine test are passing GREEN
change in application.js
fixed typos and renamed function 'HangoutsUtils' -> 'EventInstancesUtils'
refactored 'hangouts.feature' and step_defs
Merge pull request #537 from tochman/event-epic

Rename event and hangout models