Fixed generics return value of Window and Buffer operators

Generics values where incorrect.  The correct result for windowWithXXX
operators is Observable<Observable<T>> and for bufferWithXXX it's
Observable<T[]>
jQuery: JSDoc'd bind
jQuery: JSDoc'd blur
set to private

:cold_sweat:
added CONTRIBUTING.md with link to wiki
Merge pull request #1684 from carldebilly/master

Fixed generics return value of Window and Buffer operators
underscore: remove 'extends {}' constraint from each and map
Merge pull request #1714 from borisyankov/docs/contribute

added CONTRIBUTING.md with link to wiki
Merge pull request #1712 from jraymakers/master

underscore: remove 'extends {}' constraint from each and map
jQuery: fix to jquerymobile tests
jQuery: and fixed Sammy too
Merge pull request #1708 from johnnyreilly/master

jQuery: JSDoc'd blur and bind
Add moment amd definition (require shim)
Merge pull request #1718 from SomaticIT/fix-moment

Add moment AMD definition (require shim)
Update three.d.ts

Added missing .userData property to Object3D
Merge pull request #1719 from rmoudy/patch-1

Update three.d.ts