Update comment for wrapFsFunc
Use files-wrapped pathwatcher

Accidentally broken in 6320acabc4 (the merge of 1.0.2 into devel).
Bump NODE_VERSION to 0.10.35.
Update generate-dev-bundle.sh to use prebuilt Node v0.10.35.
Remove unused 'promise' NPM package.

Bumping the dev bundle version to 0.3.81 because .79 and .81 have already
been built and copied to S3, but not merged into devel.