Remove github button and replace with simple link
Remove github button and replace with simple link

stfc/mimic,GooBall/mimic,jrha/mimic,stfc/mimic,jrha/mimic,IIHE/mimic,jrha/mimic,IIHE/mimic,GooBall/mimic,GooBall/mimic,jrha/mimic,IIHE/mimic,stfc/mimic,GooBall/mimic,stfc/mimic,IIHE/mimic