Support for Angular 1.2+

[mbenford]

Currently the directive is incompatible with Angular 1.2+ and it only works with 1.0.x versions. I'm aware of two issues so far:

• ngTransclude has changed in v1.2 and now it removes any existing content of the element it is applied to. And since it's placed on the ngTagsInput's main element, it wipes the directive out of the DOM;
• element.scope() no longer retrieves the isolate scope of an element; element.isolateScope() should be use instead. That basically breaks all unit tests using scope();

But I think it won't stop there...

[lukecyca]

+1