Build frozen linux packages

[Berserker66]

Find and use a working freeze method for linux.
Also, automate it using travis

So, in future, for every release the linux version is automatically generated and deployed.

[Berserker66]

For travis automation, I recommend waiting on #15 though, as it'll change paths that travis will need.

[Berserker66]

Crosspost on stackoverflow:
http://stackoverflow.com/questions/31943174/cx-freeze-runpy-and-multiprocessing-multiple-paths-to-failure