Stop using node globals for browsers

[panthershark]

With the newest version of browserify, it will detect globals and insert them. However, inserting them adds more code to the bundle so we should avoid it.

The client-side process object was required in the past in this module, but is not necessary.

Then, one can bundle with browserify and these options.

b.bundle({ 
  detectGlobals: false, 
  insertGlobals: false
});