Updated mule to have update functionality, need to test.
Updated example.bag to use a numeric version.
Added install functionality, need to see if it works then test the update functionality.
Updated the .mules file format again to add a list of all the bags installed on the machine (store an additional copy of their BAGNAME.bag file in the .mules file.
Updated mule to add the functionality for update and install.
Todo: Write the remove functionality, add a help function, add search functionality.