save the earth

Put more info here

http://kleber-swf.com/the-definitive-gitignore-for-unity-projects/

1-Inside Unity, go to Edit >Project Settings > Editor

2-On Version Control, choose either Visible Meta Files or Hidden Meta Files. The difference is oly if the files will be hidden on Explorer or not.

3-If you have Unity3D Pro, optionally you can change the Asset Serialization mode to Force Text too.