Add karma config

index.js

@@ -69,7 +69,7 @@ function startGulp(name, opts) {
   };
 
   var testkarma = shell.task([
-    './node_modules/karma/bin/karma start'
+    './node_modules/karma/bin/karma start ./node_modules/gulp-bitcore/karma.conf.js'
   ]);
 
   gulp.task('test:node', testmocha);

karma.conf.js

@@ -0,0 +1,36 @@
+'use strict';
+
+// karma.conf.js
+module.exports = function(config) {
+
+  config.set({
+    browsers: ['Firefox'],
+    frameworks: ['mocha', 'detectBrowsers'],
+    detectBrowsers: {
+      enabled: true,
+      usePhantomJS: false,
+      postDetection: function(availableBrowser) {
+        // modify to enable additional browsers if available
+        var runBrowsers = ['Firefox', 'Chrome'];
+        var browsers = [];
+        for(var i = 0; i < runBrowsers.length; i++) {
+          if(~availableBrowser.indexOf(runBrowsers[i])) {
+            browsers.push(runBrowsers[i]);
+          }
+        }
+        return browsers;
+      }
+    },
+    singleRun: true,
+    files: [
+      './../../tests.js' // project root
+    ],
+    plugins: [
+      'karma-mocha',
+      'karma-chrome-launcher',
+      'karma-firefox-launcher',
+      'karma-detect-browsers'
+    ]
+  });
+
+};