add dev dependencies to language API (#1484)

Author: stephenplusplus

packages/language/package.json

@@ -63,7 +63,9 @@
   },
   "devDependencies": {
     "mocha": "^2.1.0",
-    "proxyquire": "^1.7.10"
+    "node-uuid": "^1.4.7",
+    "proxyquire": "^1.7.10",
+    "through2": "^2.0.1"
   },
   "scripts": {
     "publish-module": "node ../../scripts/publish.js language",

packages/language/src/index.js

@@ -20,12 +20,11 @@
 
 'use strict';
 
+var common = require('@google-cloud/common');
 var extend = require('extend');
-var is = require('is');
-var GrpcService = require('@google-cloud/common').GrpcService;
 var googleProtoFiles = require('google-proto-files');
-var nodeutil = require('util');
-var util = require('@google-cloud/common').util;
+var is = require('is');
+var util = require('util');
 
 /**
  * @type {module:language/document}
@@ -70,7 +69,7 @@ var PKG = require('../package.json');
  */
 function Language(options) {
   if (!(this instanceof Language)) {
-    options = util.normalizeArguments(this, options);
+    options = common.util.normalizeArguments(this, options);
     return new Language(options);
   }
 
@@ -90,10 +89,10 @@ function Language(options) {
     userAgent: PKG.name + '/' + PKG.version
   };
 
-  GrpcService.call(this, config, options);
+  common.GrpcService.call(this, config, options);
 }
 
-nodeutil.inherits(Language, GrpcService);
+util.inherits(Language, common.GrpcService);
 
 /**
  * Run an annotation of a block of text.