Added WebGL heatmap plugin
Added WebGL heatmap plugin

I added it next to and after the other heatmap plugins.
geoloep/Leaflet,rlugojr/Leaflet,brah/Leaflet,msiadak/Leaflet,scaddenp/Leaflet,codeator/Leaflet,rlugojr/Leaflet,sisou/Leaflet,geoloep/Leaflet,frogcat/Leaflet,brah/Leaflet,iZucken/Leaflet,scaddenp/Leaflet,jasonoverland/Leaflet,scaddenp/Leaflet,Ubisense/Leaflet,jasonoverland/Leaflet,iOffice/Leaflet,tsantacruz/RotationalMarker,davojta/Leaflet,codeator/Leaflet,jasonoverland/Leaflet,Neorth/Leaflet,iZucken/Leaflet,brah/Leaflet,AP-whitehat/Leaflet,codeator/Leaflet,sisou/Leaflet,sisou/Leaflet,tsantacruz/RotationalMarker,rlugojr/Leaflet,stefanocudini/Leaflet,Leaflet/Leaflet,davojta/Leaflet,Neorth/Leaflet,geoloep/Leaflet,frogcat/Leaflet,tsantacruz/RotationalMarker,Ubisense/Leaflet,Trufi/Leaflet,iOffice/Leaflet,msiadak/Leaflet,stefanocudini/Leaflet,Neorth/Leaflet,msiadak/Leaflet,Trufi/Leaflet,stefanocudini/Leaflet,iZucken/Leaflet,Leaflet/Leaflet,AP-whitehat/Leaflet,akrzyzanowskino/TeamSE,AP-whitehat/Leaflet,davojta/Leaflet,frogcat/Leaflet,Trufi/Leaflet,akrzyzanowskino/TeamSE,CapeSepias/Leaflet,akrzyzanowskino/TeamSE,CapeSepias/Leaflet,Leaflet/Leaflet,Ubisense/Leaflet,CapeSepias/Leaflet,iOffice/Leaflet