add campfire configuration to config
add campfire support
add campfire notification
refactor notifications

use swtich instead of multiple if/continue
Merge pull request #6 from fallenhitokiri/campfire

Campfire support
handle json errors while parsing config
update docs
Merge branch 'master' of github.com:fallenhitokiri/leeroyci into new-config

Conflicts:
	config/config.go
	notification/notification.go
remove old code
fix test
update docs for campfire