(fix):Wrap file in IIFE to avoid conflicts on the page

Some devs might have the old Stackmob JS SDK on the page and this will prevent conflicts

Fixes #1
(feat)(Stackmob):Add ability to use custom local storage keys

Avoid namespace conflicts in the browser and use namespaced localstorage keys

fixes #2
(docs)(StackmobProvider):Add docs for setting local storage key
(chore):Merge branch 'master' of https://github.com/collinforrester/angular-stackmob
(chore)(docs):fix typo in query param docs
(chore):Bumping version to 0.0.2 and prepping to release