Update StandardFirmataYun.ino

Added wait for u-boot to complete in setup()
Update StandardFirmataYun.ino

I modified setup() to allow for a wait for u-boot to complete. Without this change WiFi would never initialize on the Yun. This is being used in s2a_fm in the snap!mobile examples.
Update StandardFirmataYun.ino

Setup() reformatted.
Update StandardFirmataYun.ino

Removed extra line feed
Merge pull request #1 from MrYsLab/master

Wait for u-boot to complete to allow WiFi to initialize