Merge pull request #207 from Igorbek/ts

Updated TypeScript definition files to sync with v2.2.28
Support objectMode streams in Node.js

Write original object to stream instead of its stringified version. This fixes writing objects to streams created as [Writable({objectMode: true})](http://nodejs.org/api/stream.html#stream_new_stream_writable_options).
Merge pull request #210 from RReverser/patch-1

Support objectMode streams in Node.js
Closing issue #206
Partial fix to Issue #205
Adding more fixes to Issue #205
First commit for Issue #214
rx.js renamed to rx.
Fixing Issue #211 Issue #212 Issue #214
Added few helpers functions.
Added ObservableStatic.from definition.
Removed scheduler parameter from fromCallback and fromNodeCallback.
Exchanged parameters scheduler and context in ObservableStatic.start.
Exchanged parameters scheduler and context in ObservableStatic.toAsync.
Remove TS files before merge.
Merge remote-tracking branch 'ts/master' into ts