Make README.md relevant to this mod
Adds Item extensions.

Makes notes extend ItemNote and coins extend ItemCoin
Code cleanup and update to 1.6.2

Forge version 9.10.0.790
Remove mess of if statements

Now uses much more extensible ItemCoin and ItemNote instances.
Mod relevance.
Merge pull request #1 from maxpowa/master

Update to 1.6.2, code cleanup, miscellaneous fixes.