Update README.md
No need to bark on every stamp

If you are trying to change icons please follow directions on
https://github.com/IconoclastLabs/motion-rubberstamp#changing-icons
Updating gems
Updated to have social share action sheet
Addion social framework
Fix image path
Merge pull request #8 from cmckni3/patch-1

Fix image path typo.
Simple icon stamps
Merge from master
Closer to being functional for iOS7