Made push_repos dynamically find repos

The script now uses find to locate all repos two directories deep in the
user's home directory. Limited depth was implemented so that extraneous
repositories like vim plugins that you would typically only pull have been
omitted. The script must be run as the user that has the home directory that
you want to use the script with. (may break older raspberry pi scripts, but
will make the script actually usable on other Linux systems).
Merge branch 'master' of github.com:jfjhh/bin