ReactiveX/RxJava — pull request #1888 by lucaslabs (2014-11-17 20:03:03+00:00)
Title: Create an Observable that emits each char in the source String.

Motivation:
* RxJS has this [from](http://xgrommx.github.io/rx-book/content/core_objects/observable/observable_methods/from.html) feature and it's simple awesome, so, why not included it :)