Add maven assembly configuration to create jar-with-dependencies

[karlvr]

Use: mvn assembly:assembly

I'm not sure if you want this, but it was useful for me when doing work on it. The assembly creates the jar with the dependencies included.

[dkador]

Ah, cool! Looks good except for the formatting. Can we get that cleaned up?

[karlvr]

That ought to fix it - I work in tabs rather than spaces usually.

[dkador]

Merged!