jasmine: fixed createSpy definition

Added `originalFn` parameter according to https://github.com/pivotal/jasmine/blob/master/src/core/base.js#L52
Fixed Rx.Scheduler and Rx.Disposable

Rx.Scheduler and Rx.Disposable were wrongly typed since TS 0.9.x
Merge pull request #854 from carldebilly/master

Fixed Rx.Scheduler and Rx.Disposable
Merge pull request #853 from artch/patch-1

jasmine: fixed createSpy definition