.jam files not installed

The user-config.jam in https://github.com/kivy/python-for-android/tree/master/pythonforandroid/recipes/boost does not show up in the installed p4a recipes folder /home/paul/.local/lib/python2.7/site-packages/pythonforandroid/recipes/boost/

Perhaps .jam files have to be added to this array as well: https://github.com/kived/python-for-android/commit/93fcf656e2aafc6a75ee06dab3e471e1eb509d87
