Update docs to note that you now need to specify a formatter.
Update docs to note that you now need to specify a formatter.

mmayorivera/jslint4java,mmayorivera/jslint4java,rsingla/jslint4java,llwanghong/jslint4java,nikgoodley-ibboost/jslint4java,mmayorivera/jslint4java,llwanghong/jslint4java,nikgoodley-ibboost/jslint4java,nikgoodley-ibboost/jslint4java,rsingla/jslint4java,llwanghong/jslint4java,rsingla/jslint4java,llwanghong/jslint4java,rsingla/jslint4java,nikgoodley-ibboost/jslint4java,nikgoodley-ibboost/jslint4java,llwanghong/jslint4java,mmayorivera/jslint4java,mmayorivera/jslint4java,rsingla/jslint4java