Switched aggressiveDelete option for deleteOnExpire option.
Merge branch '1.2.0'
Merge branch '2.0.0'
Merge branch '2.0.0'

Conflicts:
	src/angular-cache.js
Merge branch '2.0.0'

Conflicts:
	docs/$AngularCacheFactoryProvider.html
	docs/AngularCache.html
	docs/AngularCacheFactory.html
	docs/angular-cache-2.0.0-SNAPSHOT.js.html
	docs/index.html
	docs/module-angular-cache.html
Updated docs and tests for new deleteOnExpire feature.
Merge pull request #47 from jmdobry/feature-deleteOnExpire

Feature delete on expire