linux: Use the application icon
Add ignore when compiled.
Fixed rake release as mentioned in #17.
Version bump to v1.0.0-beta.2.
Merge pull request #19 from kud/fix.ignore-compile

Ignore debugging artifacts created during compilation.
Merge pull request #18 from madx/linux-app-icon

Use the application icon on Linux
Adding Vagrant.
Documentation for Vagrant setup.