Add some documentation on event driven programming.
Merge pull request #453 from nomis52/master

Add some documentation on event driven programming.
Include the missing doxygen-examples in the build.
Fix a typo.
Merge pull request #454 from nomis52/master

Include the missing doxygen-examples in the build.
Add a link to the Kivy example.
Merge pull request #456 from nomis52/master

Add a link to the Kivy example.
Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2