Arduino Mega Support

[mrfrase3]

It's been reported that users are having issues uploading to Arduino Megas. The mega uses the wiring protocol to upload instead of the arduino one.

An initial glance at adding support seems to be some-what of a complicated debug.

Will hopefully look into this over the Christmas period.

[mrfrase3]

I've figured out the issue, but it seems I've corrupted my uno in the process. I don't wanna release until I've tested this properly on an uno.