Update README.md

Just an update to the examples installation process for macs since that one was kind of confusing :)
Update README.md

Good call on that leading slash. Removed!
Merge pull request #4 from brandonaaskov/patch-1

Update README.md
Update Circuit_07.ino

Fixing baud rate to character conversion
Merge pull request #5 from jacobbudin/master

Update Circuit_07.ino
Update Circuit_07.ino
Merge pull request #1 from sparkfun/master

update