Merge pull request #206 from kliment/experimental

Merge experimental into master
clean up the README syntax for those working in the 80-column world,
changed only whitespace and line endings
move Arduino-build.txt into the build tree and out of the top level
update README
final tweaks on the docs after testing on a second mac.
Merge pull request #208 from allartburns/master

Merge Docs for Arduino build