Don't file glob on /; Look in ./ and ./app instead

I'm not sure how the currently committed code is working for anyone, unless maybe the syntax works for an older version of glob or node.

The file globbing which discovers which files to compile to jade, tss or coffee looks in the root partition (`/`) instead of the current working directory (`./`). I have fixed this.

Unfortunately this will require you run `ti build` from the `app` directory which I think is a bit odd. I left this as an option in case this was desired functionality. I can fix this up if you just want it to look in only `./app` instead of both `./` and `./app`.

Also, glob may support a better way to look in multiple directories. I'm not familiar with it though.