move HipChat and Slack settings to Notify.Arguments
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
add name to repo
add identifier to Repository
export Identifier
add identifier to job and template
rename variables
move GitHubKey to Repository.AccessKey

This allows repository specific access keys.
update documentation
remove GitHubKey from Config struct
add configuration validation
validate configuration when starting leeroy
fix examples in configuration doc
add validation for notification services
Merge pull request #8 from fallenhitokiri/new-config

New config