Configuration loader created, but logic not implemeted.
Events now emitted for testRunBegin and testRunComplete.  Grunt task set to log out using events within the basic reporter instead of in the task.
ConfigLoader.load is now async, to allow for loading configs from files.
Can load configuration from json files
Configuration load will return error if the file is not found.
Configuration load will return error when the file contains invalid json
Merge branch 'master' of https://github.com/tegud/grunt-juve