First Working copy of XMEGA_PROGMEM_Serial
add author recognition, and commented out references to other non included libraries
Merge branch 'master' of https://github.com/jbagel2/XMEGA_Serial

# By jbagel2
# Via jbagel2
* 'master' of https://github.com/jbagel2/XMEGA_Serial:
  Update README.md
  Update README.md
  Initial commit