Before erroring, check .bowerrc for folder location

[thataustin]

When no directory was explicitly specified and the bower_components folder can't be found in it's usual place, I think the .bowerrc file should be checked for a folder location. If it's not specified there, the error can proceed as per normal.

[stephenplusplus]

Yes! I've been meaning to do this, but haven't been able to get around to it. Would you like to send in a PR?

[stephenplusplus]

@thataustin I got antsy and tried to implement. Feel free to review and leave any thoughts. (#67)

[stephenplusplus]

Merged 👍

[thataustin]

@stephenplusplus looks great! I had implemented almost the same thing, but didn't get far enough in the tests to commit. The only thing I might add would be another console.log explaining where all you checked for the bower folder before you decided that you couldn't find it to make it easier for the user to fix in a case like that. But you did add it to the docs (:thumbsup:), so not too concerned if you don't :)