chore: Update devdependencies

package.json

@@ -22,6 +22,7 @@
   "author": "Vojta Jina <[email protected]>",
   "dependencies": {},
   "devDependencies": {
+    "chai": "^3.4.1",
     "eslint": "^0.22.1",
     "eslint-config-standard": "^2.0.1",
     "eslint-plugin-react": "^2.5.0",
@@ -30,16 +31,18 @@
     "grunt-bump": "~0.0.7",
     "grunt-contrib-jshint": "~0.10",
     "grunt-eslint": "^14.0.0",
-    "grunt-karma": "~0.8.0",
+    "grunt-karma": "^0.12.1",
     "grunt-npm": "~0.0.2",
-    "karma": "~0.12.0",
+    "karma": "^0.13.15",
     "karma-chai": "~0.1.0",
-    "karma-chrome-launcher": "~0.1.0",
+    "karma-chrome-launcher": "^0.2.1",
     "karma-firefox-launcher": "~0.1.0",
     "karma-mocha": "~0.1.3",
     "karma-sinon": "~1.0.3",
     "load-grunt-tasks": "^3.2.0",
-    "shared-karma-files": "git://github.com/karma-runner/shared-karma-files.git#82ae8d02"
+    "mocha": "^2.3.3",
+    "shared-karma-files": "git://github.com/karma-runner/shared-karma-files.git#82ae8d02",
+    "sinon": "^1.17.2"
   },
   "peerDependencies": {
     "mocha": "*"