readme: mention reactify transform
`transform` is singular

If you follow the README and make it plural, your app won't build.
Merge pull request #453 from terinjokes/patch-1

`transform` is singular
Use transforms with --deps and --list flags.

Allows transformed scripts to be parsed correctly
for dependencies. Currently, using these options
in combination with coffeeify or brfs (among
others) will throw a syntax error.
2.25.1
pass extensions opts to browser-resolve and module-deps
return this from extension() method
pass extensions as an option
propagare row.id through deps stream
Browserify.prototype.extension(), docs
mention --extension in the advanced usage section
bump browser-pack for web workers
2.26.0
Allow arbitrary external ids

Right now, ids used to reference modules in external bundles are
required to correspond to actual files, but it'd be helpful if these ids
could be arbitrary. This issue has been brought up in #387 and #472.

A small change to how external modules are loaded, combined with using
the mdeps filter option, allows for arbitrary external ids. This commit
includes test coverage.
2.27.0
Merge branch 'master' of github.com:substack/node-browserify
-x works again for non-core module names
fix for external core module names
filter deps for externals
external test passes