Migrate SBT Plugin doc to Sphinx, close #2534
Migrate SBT Plugin doc to Sphinx, close #2534

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