You may specify exactly what dist directories you want included through `Rails.application.config.rails_lineman.lineman_assets` or environment variable $LINEMAN_ASSETS.  Javascript and CSS are preprocessed, while any other folders- for example, img, are simply included in assets untouched.  Multiple folders are expressed as a comma-separated string.
Changed config.rails_lineman.lineman_assets to accept an array of Strings or Symbols
Merge pull request #6 from rjo1970/master

I wanted glyphicons pulled in without a fight.  What do you think?  Critique welcome.