When one of the test fails, throw warning with protractor exit code
When one of the test fails, throw warning with protractor exit code

lmacneil/grunt-protractor-runner,rbrcurtis/grunt-protractor-runner,christian-bromann/grunt-protractor-runner,rohitkadam19/grunt-protractor-runner,teerapap/grunt-protractor-runner,sullivanpt/grunt-protractor-runner,spinningarrow/grunt-protractor-runner