add browser specific version

[clentfort]

Closes #6

Not sure if this is the best approach. I tried to keep the changes to a minimum. I resolved the dependency on module "stream" by depending on "stream-browserify" and the dependency on "util" by using the "inherits"-packages (which is also used by stream-browserify, see package.json).

[diavrank]

Awesome, I guess your PR solves this issue then:

have you published your changes with another alias?

[clentfort]

I did not. I'm also no longer working with this package.