Merge pull request #130 from silvenon/master

Add Jade recipe
adjust to new bower_components location

as of https://github.com/yeoman/generator-gulp-webapp/commit/fdb1f7d493304e65a95a0dda63b05d2ffcd2a1b6 `bower_components` lives in the root, and should ignored`
Merge pull request #131 from jcsrb/patch-1

update gitignore after moving bower_components