Update maven plugin doc, close #2058
Update maven plugin doc, close #2058

MykolaB/gatling,GabrielPlassard/gatling,pwielgolaski/gatling,wiacekm/gatling,pwielgolaski/gatling,MykolaB/gatling,thkluge/gatling,gatling/gatling,timve/gatling,timve/gatling,gatling/gatling,pwielgolaski/gatling,thkluge/gatling,ryez/gatling,gatling/gatling,timve/gatling,ryez/gatling,pwielgolaski/gatling,thkluge/gatling,MykolaB/gatling,wiacekm/gatling,timve/gatling,ryez/gatling,GabrielPlassard/gatling,GabrielPlassard/gatling,thkluge/gatling,wiacekm/gatling,ryez/gatling,gatling/gatling,MykolaB/gatling,wiacekm/gatling,GabrielPlassard/gatling,wiacekm/gatling,gatling/gatling