Stashing your changes

Stashing is a great way to pause what you’re currently working on and come back to it later. For example, if you working on that awesome, brand new feature but someone just found a bug that you need to fix. Add your changes to the index using

git add .

Or add individual files to the index, your pick. Stash your changes away with:

git stash

And boom! You’re back to your original working state. Got that bug fixed? Bring your work back with:

git stash apply

 
  You might have stashed more than one, now you want to get the last one.

   git stash pop

   

source: http://gitready.com/beginner/2009/01/10/stashing-your-changes.html