replace node_modules with <NODE_MODULES>

[chrisblossom]

Because node_modules are not consistent I found some issues where my snapshots were failing. This makes all node_modules under a single <NODE_MODULES> tag.

[coveralls]

Coverage remained the same at 100.0% when pulling 68d49b6 on chrisblossom:handle-node-modules into 6ab7111 on tribou:master.

[chrisblossom]

I'm not 100% sure this should be merged because it might have other side effects. Wonder if there is a way we can make this opt-in?

Edit: Definitely hold off on merging this. It will break any text with node_modules and I think a better solution will need to be thought out completely / this might need to be dropped entirely.