Create Version 2 of the Humbug Hook Payload, Rename Humbug->Zulip

This adds additional fields to help users customize where their github
traffic ends up, and helps filter the traffic for particularly noisy
repositories.

This also rebrands the Humbug hook as Zulip, to reflect the change
in Company name.
Revise Zulip documentation
Fixup Humbug/Zulip unit test
First commit
set the correct class name
changed some URLs
minor URL edits
add support for HipChat message colors

see: https://www.hipchat.com/docs/api/method/rooms/message
Add MyGet service

Add www.myget.org service
Update myget_test.rb
Adding Leanpub service
Update leanpub_test.rb

It's LeanpubTest, not LeanpubText
Update myget.rb
Merge pull request #805 from myget/master

Add MyGet service
Merge pull request #806 from spatten/master

Adding Leanpub service
Merge pull request #803 from pedro/hipchat-color-support

add support for HipChat message colors
Merge pull request #783 from acrefoot/acrefoot

Change title of Humbug Integration to Zulip to reflect company name change. Also update configuration spec.
Update myget.rb
Update myget_test.rb

Result status code should be 201 Created
rename rationaljazzhub doc to remove .txt extension