[fixed] missing dev dep

Author: jquense

package.json

@@ -99,6 +99,7 @@
     "karma-mocha": "^0.2.0",
     "karma-mocha-reporter": "^1.1.1",
     "karma-sauce-launcher": "^0.2.14",
+    "karma-sinon": "^1.0.4",
     "karma-sourcemap-loader": "^0.3.5",
     "karma-webpack": "^1.7.0",
     "less": "^2.5.1",
@@ -118,6 +119,7 @@
     "release-script": "^0.3.0",
     "rimraf": "^2.4.2",
     "scriptjs": "^2.5.8",
+    "sinon": "^1.17.2",
     "style-loader": "^0.12.3",
     "url-loader": "^0.5.5",
     "webpack": "^1.10.5",