Merge branch 'joerc' of https://github.com/sargas/oh-my-zsh into sargas-joerc

plugins/command-not-found/command-not-found.plugin.zsh

+# Uses the command-not-found package zsh support
+# as seen in http://www.porcheron.info/command-not-found-for-zsh/
+# this is installed in Ubuntu
+
+source /etc/zsh_command_not_found