Build using g++4.8
Some minor tidying of headers and a man page
Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2
Merge pull request #447 from peternewman/e1.37-2

Make Travis use g++4.8
Merge branch 'master' of https://github.com/OpenLightingProject/ola into slotinfo