Adding missing error parameter to callback (GoogleCloudPlatform#156)

Also logs errors to the console.

Author: rickydunlop

language/analyze.js

@@ -165,7 +165,10 @@ if (require.main === module) {
  'Usage: node analyze.js <sentiment|entities|syntax> <text>');
  process.exit(1);
  }
- exports.main(args[0], args[1], function (result) {
+ exports.main(args[0], args[1], function (err, result) {
+ if (err) {
+ console.error(err);
+ }
  console.log(JSON.stringify(result, null, ' '));
  });
 }