Ignore mgr dir in share
Add directory for storing project files
Add background script.

This is a basic-ish background script manager. It will start things up as
needed and deamonize stuff as well. Notifications are delivered using
terminal-notifier. It doesn't do a lot to make sure it cleans up though, which
is probably a bad thing. Maybe it should check that all deamonized processes
are shut down.
Update readme
Add cd command.

This takes us to the _MGR_DIR so we can manipulate and set stuff up as needed.