gulp error

```
[14:25:41] TypeError: object is not a function
at Gulp. (/Users/patrick/Documents/open-source/angular.hs/gulpfile.js:9:10)
at module.exports (/Users/patrick/Documents/open-source/angular.hs/node_modules/gulp/node_modules/orchestrator/lib/runTask.js:34:7)
at Gulp.Orchestrator._runTask (/Users/patrick/Documents/open-source/angular.hs/node_modules/gulp/node_modules/orchestrator/index.js:273:3)
at Gulp.Orchestrator._runStep (/Users/patrick/Documents/open-source/angular.hs/node_modules/gulp/node_modules/orchestrator/index.js:214:10)
at Gulp.Orchestrator.start (/Users/patrick/Documents/open-source/angular.hs/node_modules/gulp/node_modules/orchestrator/index.js:134:8)
at /Users/patrick/.nvm/versions/node/v0.12.4/lib/node_modules/gulp/bin/gulp.js:129:20
at process._tickCallback (node.js:355:11)
at Function.Module.runMain (module.js:503:11)
at startup (node.js:129:16)
at node.js:814:3
```

Reproduce the gulp task and inspect gulpfile.js at line 9, using the Node.js v0.12.4 stack trace as the starting point. Done means the reported TypeError no longer occurs and the gulp task completes successfully.

Written by the indexing model from the issue text.