Missing support for bower.json "overrides"

Bower let me set up overrides for managed bower components by adding an "overrides" key in the bower.json module.

Unfortunately requiring such "overridden" modules from browserify doesn't work because it looks for the wrong main and dependencies.

I'm not sure, but I guess the cause is that bower-resolve try to mimic bower in bower.json parsing, but doesn't support all of the features (so it doesn't support overrides).