Missing `_bowerrc` starter file

[goldenapples]

Currently on the develop branch, yo wp-make:plugin fails to build. This seems to be because of this line, which is looking for a _bowerrc.json starter template (in /src/starters).

Commenting out that line made the generator work fine for me.

[lkwdwrd]

Thanks for the issue!

This is probably worth cleaning up a bit so that the current output (all that exists in the new version right now is the plugin) at least functions. We've been having quite a few discussions with the team about what we want the final output to look like. The current plan is quite different from the old plugin and what's present in the develop branch now. At some point soon I'll try to get things cleaned up so that the output is at least functional for the :plugin subgenerator.