Renamed LaunchFrame.java to LauncherFrame.java

<ul>
    <li>Renamed <code>LaunchFrame.java</code> to <code>LauncherFrame.java</code></li>
    <li>Improved <code>readme.md</code></li>
    <li>Removed unnecessary imports</li>
    <li>Neatened some code</li>
    <li>Added a comment in <code>GameUtils.java</code> to decribe what the <code>killMC()</code> method does, since all the other <code>___Utils.java</code> have comments to</li>
</ul>