Add nospeak config

	All repositories can set config hooks.hipchat.nospeak = 1 to prevent
	speaking.

	Example:
	In gitolite.conf
		repo testing
			RW+     =   @all
			config hooks.hipchat.from = Testing
			config hooks.hipchat.nospeak = 1

	Or set config.yml nospeak as 1, so all repositories won't speak.
	Then turn on speak for the repositoriess you want/
	Example:
	In config.yml
		nospeak: '1'
	In gitolite.conf
		repo testing
			RW+     =   @all
			config hooks.hipchat.from = Testing
			config hooks.hipchat.nospeak = 0
			// actually all values except 1 will make it speak
Add redmine url feature

	To use this feature, set [redmineurl] as your redmine home, and
	specify the [project] which your repository belongs, if your
	repository identifier is differ from the repository name, then you
	have to specify it in the [repository] config, too.

	Example:
	In config.yml
		redmineurl: 'http://redmine-url.com'
	In gitolite.conf
		repo testing
			RW+     =   @all
			config hooks.hipchat.from = Testing
			config hooks.hipchat.project = your-project
			config hooks.hipchat.repository = some-name-other-than-testing # (optional)
Update README.md