add auto resolver

[piercus]

Hello @jaredhanson

I've seen in the code that @implements and @requires are defined.

I think it makes sense to add https://github.com/bixbyjs/bixby/blob/master/lib/resolvers/auto.js into electrolyte and to include it by default.

[coveralls]

Coverage decreased (-2.8%) to 90.69% when pulling 7929a2d on piercus:auto_resolver into d6af75b on jaredhanson:master.

[coveralls]

Coverage decreased (-2.8%) to 90.69% when pulling ac7a032 on piercus:auto_resolver into d6af75b on jaredhanson:master.