Update checker roughly added

Hello! I have added the update checker from my mod to yours. However, there are a few steps still necessary to make it all work. These steps are easiest in Eclipse.

- Fix the package names of files in the /update/ package
- Organize (add) Imports on your main class
- Replace "Minetunes" with "ExtraneousCraft" in the license comments for each file in the /update/ package.

Then put a versions file up on GitHub or Dropbox (an example is provided) and fix the placeholder URLs in your main class.

Two final steps that are slightly harder:

- My VersionCompare class only works with up to four numbers, separated by periods. Letters baffle it. I have created a temporary solution, but if you want a better version compare, you'll have to use Forge's or search the internet.

- To only show an update message ONCE per new update (highly highly recommended), you'll need to set up a config file for your mod. I believe Forge has some mechanism for this. If you don't want to do this (and pester your users with constant, OptiFine-style messages), you may remove all references to MinetunesConfig from the main ExtraneousCraft class.

Good luck!