Update dependencies to enable Greenkeeper 🌴 (#14)

* chore(package): update dependencies

Author: greenkeeper[bot]

packages/google-cloud-vision/package.json

@@ -56,11 +56,11 @@
     "test": "repo-tools test run --cmd npm -- run cover"
   },
   "dependencies": {
-    "@google-cloud/common": "^0.13.0",
+    "@google-cloud/common": "^0.15.1",
     "async": "^2.0.1",
     "extend": "^3.0.0",
     "google-gax": "^0.14.2",
-    "google-proto-files": "^0.13.1",
+    "google-proto-files": "^0.14.1",
     "is": "^3.0.1",
     "lodash.merge": "^4.6.0"
   },
@@ -75,12 +75,12 @@
     "ink-docstrap": "^1.3.0",
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.5.5",
-    "mocha": "^3.5.3",
+    "mocha": "^4.0.1",
     "node-uuid": "^1.4.7",
-    "nyc": "^10.3.2",
+    "nyc": "^11.3.0",
     "power-assert": "^1.4.4",
     "prettier": "^1.7.4",
     "safe-buffer": "^5.1.1",
-    "sinon": "^2.2.0"
+    "sinon": "^4.1.2"
   }
 }