fix elm make command to utilize the new elm make rather than elm-make #168
I figured I'd send this in to start a discussion. There are still some of the commands that don't work right yet because they are still relying on the old style of calling them. Specifically the ElmMakeMain and ElmRepl. Either way, I'd like to fully address #164.
I didn't know if you'd prefer those to all be in separate PR's and I wasn't positive if you wanted backwards compatibility if someone is using an old version of Elm. Either way, I'm happy to do seperate PR's, one large PR and to make a stab at making it backwards compatible as well.