turn on Doxyfile dot graphs only if graphviz has been found
Merge branch 'master' of https://github.com/NPSVisionLab/CVAC
separate option for building documentation
Merge pull request #18 from matzk/master

Doxygen improvements: conditional build, "dot" only if found, README.md
adding icebox run script
Merge branch 'master' of https://github.com/NPSVisionLab/CVAC
icebox script start and stop changes