Default reporters lcov, json with a way to specify it from runner

Author: hakubo

lib/coverage.js

@@ -4,7 +4,8 @@ var path = require('path'),
 var istanbul,
     collector,
     options = {
-        dir: 'coverage'
+        dir: 'coverage',
+        reporters: ['lcov', 'json']
     };
 
 try {
@@ -38,7 +39,11 @@ exports.report = function() {
 
     if (collector) {
         Report = istanbul.Report;
-        reports = [Report.create('lcov', options), Report.create('json', options)];
+
+        reports = options.reporters.map(function (report) {
+            return Report.create(report, options);
+        });
+
         reports.forEach(function(rep) {
             rep.writeReport(collector, true);
         });