added Grails plugin by @tuler
added Grails plugin by @tuler

ms123s/prerender,netlify/prerender,mgmco/prerender,ovotech/prerender,JuoCode/prerender,wcandillon/prerender,LendioDevs/prerender,inventaire/prerender,challengerdeep/prerender,prerender/prerender,goabout/prerender,ifeelgoods/prerender,fiverr/prerender,goabout/prerender,inventaire/prerender,gamejolt/prerender,webflow/prerender,GrabCAD/prerender,dwdm/prerender,danishin/prerender-server,daniel-shin1104/prerender-server,heralight/prerender,JoaquinSiabra/prerender,sfarthin/prerender,viovendi/prerender,aortbals/prerender,daniel-shin1104/prerender-server,webflow/prerender,PaigeeWorld/prerender,fledit/fledit.static,Kaliber/prerender,zumper/prerender,jahmad-fareportal/prerender,GerardoNevarez/prerender,goibibo/prerender,oqv/prerender,icilalune/prerender,Raccourci/prerender,wildermuthn/prerender,lammertw/prerender,SIXNetworks/prerender,netconstruct/prerender,danishin/prerender-server,l0ne/prerender,tjfamodu/prerender,fiverr/prerender,ntucker/prerender,rubensayshi/prerender,ArnaudValensi/prerender-schedule-from-sitemap,bookbottles/prerender