Rewrite README
Rewrite README

* Remove examples of old style of testing
* Promote and expand FAQ
* Document support for rxjs and most

ntilwalli/cyclejs,usm4n/cyclejs,cyclejs/cycle-core,cyclejs/cyclejs,cyclejs/cyclejs,cyclejs/cycle-core,ntilwalli/cyclejs,cyclejs/cyclejs,staltz/cycle,feliciousx-open-source/cyclejs,feliciousx-open-source/cyclejs,ntilwalli/cyclejs,usm4n/cyclejs,staltz/cycle,cyclejs/cyclejs,usm4n/cyclejs,usm4n/cyclejs,ntilwalli/cyclejs,feliciousx-open-source/cyclejs,feliciousx-open-source/cyclejs