Install libvips on travis
Install libvips on travis

lucianobarauna/dochexo,lucianobarauna/dochexo,jack08/static-test,moajs/site,oqyj/hexobg,thekevinscott/Hero-test,lucianobarauna/dochexo,tnu818/blog.iyu.pub,LouisBarranqueiro/site,LouisBarranqueiro/site,zeroby0/zeroby0.github.io,freehao123/freehao123ne,nicktheo59/site,DoubleShift/doublesu,lotabout/site,tnu818/blog.iyu.pub,freehao123/freehao123ne,zeroby0/zeroby0.github.io,DoubleShift/doublesu,oqyj/hexobg,pona08/site-static,freehao123/freehao123ne,LouisBarranqueiro/site,zeroby0/zeroby0.github.io,moajs/site,oqyj/hexobg,hexojs/site,moajs/site,KeishaSPerkins/firmly-planted,pona08/site-static,wwyyzz/blog,pona08/site-static,thekevinscott/Hero-test,wwyyzz/blog,lotabout/site,DoubleShift/doublesu,nicktheo59/site,lotabout/site,wwyyzz/blog,nicktheo59/site,KeishaSPerkins/firmly-planted,thekevinscott/Hero-test,KeishaSPerkins/firmly-planted,jack08/static-test,tnu818/blog.iyu.pub,hexojs/site