Unneeded dependencies?

Hi
I get some errors while trying to use this in Meteor.

```
Unable to resolve some modules:

"lapack" in /xx/node_modules/sylvester/lib/node-sylvester/matrix.js (os.osx.x86_64)
"WNdb" in /xx/node_modules/natural/lib/natural/wordnet/wordnet.js (os.osx.x86_64)
"./lib-cov/stylus" in /xx/node_modules/nib/node_modules/stylus/index.js (os.osx.x86_64)
"canvas" in /xx/node_modules/nib/lib/nodes/color-image.js (os.osx.x86_64)
```

I assume those are used in the standalone UI, which i don't need in this case. I only use the job queue itself. Is there an easy way to not include the UI part?

Thanks

Start by tracing the dependency tree from the listed paths: sylvester/lib/node-sylvester/matrix.js, natural/lib/natural/wordnet/wordnet.js, nib/node_modules/stylus/index.js, and nib/lib/nodes/color-image.js. Determine whether the job-queue entry point can be installed without the standalone UI dependencies; done means Meteor can use the queue without resolving lapack, WNdb, stylus, or canvas.

Written by the indexing model from the issue text.