Added some dotfile creation + test embryo

`.bowerrc` should be created now (with `.editorconfig` and `.jshintrc`).

Note though that I've an issue with the registred hook `test-framework`: using it makes the test blew up ...
This is mainly due from my point of view because the `base.js` `runHooks`, will try to call `invoke` on the generator.
However, there's no `invoke` method in `base.js`, it is only present in `generators.js`. I guess that it is mixed in `Base` by `yeoman init`, but need to check more.