Upgrade JUnit 4.11 and specs2 1.12.3, close #824
Upgrade JUnit 4.11 and specs2 1.12.3, close #824

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