rx.jquery.d.ts moved to separated folder 'rx-jquery'.
rx.js renamed to rx.
Fixed reference path in rx.jquery.d.ts
Fixed reference path to RxJS in knockout.rx.d.ts
Merge remote-tracking branch 'remotes/upstream/master' into RxJS

Conflicts:
	knockout.rx/knockout.rx.d.ts
Fixed reference of rx in promises-a-plus-tests.ts
Merge pull request #2544 from Igorbek/RxJS

RxJS: rename to 'rx' and extract 'rx-jquery' module.