fixed gravel texture, updated to latest commit

my bad.
Merge commit 'bbc5fc2732605fc98c17321afa8b5b763530face'
Updated texture.png from https://github.com/ronmurphy/Minecraft/blob/master/resources/textures/texture.png
Updated texture.png from https://github.com/ronmurphy/Minecraft/blob/master/resources/textures/texture.png (2)
Merge branch 'master' of git://github.com/avelanarius/Minecraft