Pushl v0.1.7

I ended up doing some more work on Pushl and have now released v0.1.7. The major changes:

• Did a bunch of refactoring to make the code a little cleaner and handle configuration more appropriately
• Added a configurable timeout for connections (which now defaults to 15)
• Added a --version option on the command line arguments

Also, some suggested usage ideas below the cut!