Reflect that version is now optional in usage.txt
Reflect that version is now optional in usage.txt

electron-userland/electron-packager,sethlu/electron-packager,Goobaroo/electron-packager,Goobaroo/electron-packager,malept/electron-packager,maxogden/electron-packager,sethlu/electron-packager,malept/electron-packager,electron-userland/electron-packager