enable continuous integration via craigcitro/r-travis
updating travis yml file
adding knitr to suggests field
adding more args to R CMD Check
removing manual check
added build status to readme
added getting and starting cytoscape
correcting problem with xvfb
trying rebuild the vignette
getting xvfb to work
silly xvfb background
trying running cytoscape as sudo
adding sleep to allow Xvfb to startup
adding webserver to the mix
trying with new version of cyrpc.conf
adding ipv4 stack to vmoptions for Cytoscape
setting up conditional cytoscape connection
added runCy to all other sections
new vignettes with running code
Merge branch 'travis' of https://github.com/rmflight/categoryCompare into travis