feat(runner): add mocha options to config file

change lib/runner to allow setting mocha options from config.

docs/using-mocha.md

@@ -33,4 +33,13 @@ expect(myElement.getText()).to.eventually.equal('some text');
 
 Finally, set the 'framework' property of the config to 'mocha', either by adding `framework: mocha` to the config file or adding `--framework=mocha` to the command line.
 
+Options for mocha such as 'reporter', 'slow', can be given in config file with `mochaOpts` :
+
+```javascript
+mochaOpts: {
+  reporter: "spec",
+  slow: 3000
+}
+```
+
 See a full [example in protractor's own tests](https://github.com/angular/protractor/tree/master/spec/mocha).

lib/runner.js

@@ -32,6 +32,10 @@ var config = {
     showColors: true,
     includeStackTrace: true,
     stackFilter: protractor.filterStackTrace
+  },
+  mochaOpts: {
+    ui: 'bdd',
+    reporter: 'list'
   }
 }
 
@@ -277,10 +281,7 @@ var runTests = function() {
     } else if (config.framework == 'mocha') {
       var Mocha = require('mocha');
 
-      mocha = new Mocha({
-        ui: 'bdd',
-        reporter: 'list'
-      });
+      mocha = new Mocha(config.mochaOpts);
 
       resolvedSpecs.forEach(function(file) {
         mocha.addFile(file);

referenceConf.js

@@ -121,4 +121,12 @@ exports.config = {
     // Default time to wait in ms before a test fails.
     defaultTimeoutInterval: 30000
   }
+
+  // ----- Options to be passed to mocha -----
+  //
+  // See the full list at http://visionmedia.github.io/mocha/
+  mochaOpts: {
+    ui: 'bdd',
+    reporter: 'list'
+  }
 };