changed "be_installed" to "exists" for the website
changed "be_installed" to "exists" for the website

DarrellMozingo/serverspec,ihassin/serverspec,smontanari/serverspec,RoboticCheese/serverspec,tagomoris/serverspec,naga2raja/serverspec,mizzy/serverspec,uroesch/serverspec,ShawInnes/serverspec,higanworks/serverspec,3100/serverspec,supertylerc/serverspec,elibus/serverspec,bitglue/serverspec,aschmidt75/serverspec,elmundio87/serverspec,mekf/serverspec,pfaffle/serverspec,tacahilo/serverspec,sergueik/serverspec,inokappa/serverspec,zakkie/serverspec,doc75/serverspec,minimum2scp/serverspec,serverspec/serverspec,Plus81/serverspec,cosmo0920/serverspec