Fixed #10, #11 and #12

* GET /devices/{device_token}
* PUT /devices/{device_token}
* PATCH /devices/{device_token}
Fixed #14 and #15

* GET /channels/{channel_name}
* DELETE /channels/{channel_name}
Fixed #9

* GET /devices
Fixed #13

* GET /channels
Update README
Update module version
Merge branch 'release/1.1.0'

Conflicts:
	lib/zero_push.js