trolling around on the forums I manage to figure it out.
the first thing you need to do is make a .evn.local file in the root your working from and put the arguments in that,
EX:
EXT_CLIENT_ID= blah blah blah
EXT_SECRET= haha nope
EXT_VERSION=0.0.1
EXT_CHANNEL=rigZelkonhezine (is this right for channel)
EXT_OWNER_NAME=Zelkonhezine
and then simply put in the command yarn start on the