chore(npm): bump up dependency versions

Author: wesleycho

package.json

@@ -15,21 +15,21 @@
     "grunt-contrib-concat": "^0.5.1",
     "grunt-contrib-copy": "^0.8.0",
     "grunt-contrib-jshint": "^0.11.1",
-    "grunt-contrib-uglify": "^0.8.0",
+    "grunt-contrib-uglify": "^0.9.1",
     "grunt-contrib-watch": "^0.6.1",
-    "grunt-conventional-changelog": "^1.1.0",
+    "grunt-conventional-changelog": "^3.0.0",
     "grunt-ddescribe-iit": "0.0.6",
     "grunt-html2js": "^0.3.0",
-    "grunt-karma": "^0.10.1",
+    "grunt-karma": "^0.12.0",
     "jasmine-core": "^2.2.0",
-    "karma": "^0.12.31",
-    "karma-chrome-launcher": "^0.1.7",
-    "karma-coverage": "^0.2.7",
+    "karma": "^0.13.3",
+    "karma-chrome-launcher": "^0.2.0",
+    "karma-coverage": "^0.4.2",
     "karma-firefox-launcher": "^0.1.4",
     "karma-jasmine": "^0.3.5",
     "node-markdown": "0.1.1",
-    "semver": "^4.3.3",
-    "shelljs": "^0.4.0"
+    "semver": "^5.0.1",
+    "shelljs": "^0.5.1"
   },
   "license": "MIT"
 }