Update HOWTO-create-xtUML-Editor.md
Update HOWTO-create-xtUML-Editor.md

Add a reminder to change the xtUML Editor to default to mc.none instead of mc.c.binary
jmvachon/bridgepoint,kirisma/bridgepoint,john-tornblom/bridgepoint,john-tornblom/bridgepoint,xtuml/bridgepoint,cortlandstarrett/bridgepoint,perojonsson/bridgepoint,keithbrown/bptest,TypeFox/bridgepoint,rmulvey/bridgepoint,jmvachon/bridgepoint,cortlandstarrett/bridgepoint,lwriemen/bridgepoint,jason-rhodes/bridgepoint,john-tornblom/bridgepoint,keithbrown/bridgepoint,travislondon/bridgepoint,perojonsson/bridgepoint,lwriemen/bridgepoint,jason-rhodes/bridgepoint,jason-rhodes/bridgepoint,lwriemen/bridgepoint,rmulvey/bridgepoint,leviathan747/bridgepoint,HebaKhaled/bridgepoint,xtuml/bptest,kirisma/bridgepoint,lwriemen/bridgepoint,jason-rhodes/bridgepoint,xtuml/bridgepoint,john-tornblom/bridgepoint,rmulvey/bptest,travislondon/bridgepoint,perojonsson/bridgepoint,travislondon/bridgepoint,leviathan747/bridgepoint,jmvachon/bridgepoint,nmohamad/bridgepoint,cortlandstarrett/bridgepoint,rmulvey/bridgepoint,HebaKhaled/bridgepoint,HebaKhaled/bridgepoint,lwriemen/bridgepoint,travislondon/bridgepoint,john-tornblom/bridgepoint,xtuml/bptest,travislondon/bridgepoint,perojonsson/bridgepoint,rmulvey/bptest,TypeFox/bridgepoint,perojonsson/bridgepoint,leviathan747/bridgepoint,TypeFox/bridgepoint,jason-rhodes/bridgepoint,nmohamad/bridgepoint,jmvachon/bridgepoint,TypeFox/bridgepoint,jason-rhodes/bridgepoint,nmohamad/bridgepoint,lwriemen/bridgepoint,cortlandstarrett/bridgepoint,HebaKhaled/bridgepoint,keithbrown/bridgepoint,leviathan747/bridgepoint,keithbrown/bridgepoint,lwriemen/bridgepoint,keithbrown/bptest,rmulvey/bridgepoint,rmulvey/bptest,leviathan747/bridgepoint,keithbrown/bridgepoint,perojonsson/bridgepoint,cortlandstarrett/bridgepoint,nmohamad/bridgepoint,rmulvey/bridgepoint,jmvachon/bridgepoint,xtuml/bridgepoint,xtuml/bptest,kirisma/bridgepoint,keithbrown/bridgepoint,TypeFox/bridgepoint,kirisma/bridgepoint,leviathan747/bridgepoint,john-tornblom/bridgepoint,HebaKhaled/bridgepoint,perojonsson/bridgepoint,TypeFox/bridgepoint,cortlandstarrett/bridgepoint,xtuml/bridgepoint,xtuml/bridgepoint,kirisma/bridgepoint,xtuml/bridgepoint,kirisma/bridgepoint,leviathan747/bridgepoint,john-tornblom/bridgepoint,travislondon/bridgepoint,keithbrown/bptest,cortlandstarrett/bridgepoint,leviathan747/bridgepoint,kirisma/bridgepoint,xtuml/bridgepoint,keithbrown/bridgepoint,rmulvey/bridgepoint,cortlandstarrett/bridgepoint,jason-rhodes/bridgepoint,lwriemen/bridgepoint,HebaKhaled/bridgepoint,rmulvey/bridgepoint,jmvachon/bridgepoint,nmohamad/bridgepoint,travislondon/bridgepoint,TypeFox/bridgepoint,jmvachon/bridgepoint,travislondon/bridgepoint,keithbrown/bridgepoint,nmohamad/bridgepoint,nmohamad/bridgepoint,HebaKhaled/bridgepoint,xtuml/bridgepoint