TST: Disable tiff saving test (travis failure)
TST: Disable tiff saving test (travis failure)

ricket1978/ggplot,benslice/ggplot,mizzao/ggplot,bitemyapp/ggplot,xguse/ggplot,andnovar/ggplot,benslice/ggplot,assad2012/ggplot,ricket1978/ggplot,Cophy08/ggplot,mizzao/ggplot,smblance/ggplot,xguse/ggplot,kmather73/ggplot,udacity/ggplot,wllmtrng/ggplot,eco32i/ggplot