Week01

Hey there Cris, Austin here. Here's what I've done for the week 1 homework. A few notes:

* I extended the sum_client script to give you the option to choose either localhost or the bluebox vm. Both should work - the script is running on my vm.
* As you'll see from the source, I added some basic checks to more-or-less ensure the client sends numbers to the server (as opposed to letters, etc)
* All numbers are parsed as floats by the server.

I've actually never done a pull request, so please let me know if I messed something up!