Move regarde out to a peer dependancy.

I don't use it internally now, leave the configuration on that side to the user.
Remove grunt-contrib-clean as dependancy. Tasks for grunt have to be in tasks.
No need to escape with JSON (unlike the XML version)
Log http errors back in grunt via grunt.log.error.

Also prefix's status logging with [grunt-shopify] Makes identifying shopify responses easier from a stack of grunt logs.
Version bump