Started on lessons.
Added ace editor submodule.
Merge branch 'master' of https://github.com/frc868/documentation
Added basic sandbox functionality.
Merge branch 'master' of https://github.com/frc868/documentation
Restructured js lessons.
Added content to the first lesson.
Modified sandbox so it starts as an empty script.
Removed old files.
Merge branch 'master' into gh-pages