Support for ember-extension and _EAK_SEEN_ renamed to entries
remove DS_Store osx
Merge branch 'extension-support' of https://github.com/brendanoh/ember-jj-abrams-resolver into extension-support

Conflicts:
	dist/ember-resolver-spade.js
	dist/ember-resolver.js
	dist/ember-resolver.min.js
	dist/ember-resolver.prod.js
	dist/modules/ember-resolver.js