Looped through all css/js instead of assuming 0-1 of each, made
busters.json load via require, mock file system for testing, ghetto
dependency injection
tests working, added file variable
updated base url to be http_host
if no buster of type just return empty string
removed CSS_BASE_PATH and the like. simpler.
Added rootPath, updated readme
Updated readme
Fixed broken rootPath
Fixed tests
updated readme