Added missing dependencies.

Author: jmdobry

package.json

@@ -28,12 +28,14 @@
     "reql"
   ],
   "devDependencies": {
+    "chai": "1.9.2",
     "grunt": "0.4.5",
     "grunt-contrib-jshint": "0.10.0",
     "grunt-contrib-watch": "0.6.1",
     "grunt-karma-coveralls": "2.5.2",
-    "grunt-mocha-test": "^0.12.1",
+    "grunt-mocha-test": "0.12.1",
     "jit-grunt": "0.8.0",
+    "sinon": "1.10.3",
     "time-grunt": "1.0.0"
   },
   "scripts": {