Added webacoo code execution module

Noticed this was in https://github.com/anestisb/WeBaCoo
Seems to work very reliably. Figured might as well see if it can be added to the framework once I was done seeing did it work :)

Screenshot below shows it working...
http://i.imgur.com/YOPGsGb.png

// All credit to @anestisb for writing the module, I am kind of testing "did I lrn2git" committing this, but also like it as it is a useful module.