Optimise images (192 KB reduction)

Hi, maintainer.

I've taken the liberty of putting Kinect-Virtual-Disco-Deathmatch's image assets though a range of optimisation tools. Image optimisation allows us to reduce the footprint of images - meaning faster load times at no cost to image quality. It does this by finding the best (lossless) compression parameters, stripping embedded comments, and removing unnecessary colour profiles. [See more](http://port3000.co.uk/imageoptimiser-a-github-bot-to-proactively-op).

I found 20 optimisable images, making a 192 KB reduction in size. That's about 13.55% of your total image assets.

Merry Christmas.

<table><tr><th>Name</th><th>Reduction</th></tr><tr><td>bg.jpg</td><td>26.60%</td></tr><tr><td>bankLeft.png</td><td>49.16%</td></tr><tr><td>bankRight.png</td><td>47.11%</td></tr><tr><td>bothHands.png</td><td>48.19%</td></tr><tr><td>leftFoot.png</td><td>51.04%</td></tr><tr><td>leftHand.png</td><td>49.40%</td></tr><tr><td>leftLegBothArms.png</td><td>49.12%</td></tr><tr><td>rightFoot.png</td><td>50.17%</td></tr><tr><td>rightHand.png</td><td>48.86%</td></tr><tr><td>1.png</td><td>36.34%</td></tr><tr><td>2.png</td><td>24.47%</td></tr><tr><td>3.png</td><td>22.71%</td></tr><tr><td>awesome.png</td><td>10.00%</td></tr><tr><td>fight.png</td><td>10.94%</td></tr><tr><td>fuckoff.png</td><td>11.99%</td></tr><tr><td>great.png</td><td>12.24%</td></tr><tr><td>kickass.png</td><td>12.69%</td></tr><tr><td>wtf.png</td><td>13.92%</td></tr><tr><td>youreshit.png</td><td>10.51%</td></tr><tr><td>unicorn.gif</td><td>0.05%</td></tr></tr></table>

Tools used: advpng, gifsicle, jpegoptim, jpegrescan, jpegtran, optipng, pngcrush, pngout. This is an automated bot maintained by [@skattyadz](https://twitter.com/skattyadz)