=BG= add ability to dynamically load reporter
=BG= add ability to dynamically load reporter

- load default reporter (installed in angularity project)
- load custom reporter specified by -r or --reporter CLI option (installed in current project against which angularity is beign run)
- able to handle both pure streaming (asynchronous) jshint reporters, and default (synchronous) jshint reporters

angularity/node-angularity,angularity/node-angularity