NullRefExcep/gulp-casperjs — pull request #2 by michelmattos (2014-11-10 21:21:32+00:00)
Title: Added support for more complex commands

With this you can use casperjs options, like:

var casperJs = require('gulp-casperjs');
gulp.task('casperCmd', function () {
gulp.src('test.js')
.pipe(casperJs({command:'test --engine=slimerjs'})); //run capserjs test --engine=slimerjs test.js
});