Merge pull request #61 from malyw/use_strict

Added global "use strict";
Corrected development link from #63
Corrected test errors, updated grunt-saucelabs to v4
Reverted 60b37bc - was causing tests to fail
Corrected saucelabs key
Added travis user agent for github publish
Merge remote-tracking branch 'origin/master' into use_strict

Conflicts:
	dist/IndexedDBShim.js
	dist/IndexedDBShim.min.js
	dist/IndexedDBShim.min.map
	src/Event.js
	src/IDBCursor.js
	src/IDBDatabase.js
	src/IDBIndex.js
	src/IDBKeyRange.js
	src/IDBObjectStore.js
	src/IDBRequest.js
	src/IDBTransaction.js
	src/Init.js
	src/Key.js
	src/Sca.js
	src/globalVars.js
	src/shimIndexedDB.js
	src/util.js
Fixes for QUnit