Make jison a dev dependency and ship less files.

[realityking]

This PR makes the following changes:

• jison becomes a dev-depency. It's not used at runtime anyway.
• The grammar is no longer exposed on the parser.
• Ship only files in the npm which are necessary for the package to function.

Jison pulls in quite a few dependencies so this slims down the footprint of this package quite a bit.

Not exposing the grammar on the parser makes the code a bit smaller, should be especially beneficial in the browser.

[realityking]

This would also help a licensing situation for Apiary, see apiaryio/fury-adapter-swagger#168.

@dchester ping

[opichals]

@dchester Is there anything blocking this? Could this get merged?

[realityking]

@dchester I've rebased this on top of current master. I'd be awesome if you could take a look.

In addition to making the package a lot smaller and potentially fixing #119, it'd also take care of the somewhat annoying warning that nomnom is deprecated that npm shows whenever jsonpath is installed.

[pksunkara]

Can we please get a merge and publish of this @dchester?

[dchester]

I like this one -- I'll take a closer look and aim to get it merged.

[opichals]

@dchester Any news? 😄

[dchester]

This is merged in spirit, with 7fbf022 which is published as version 1.0.2.

That makes jison a dev dependency, and then we point the browser field in package.json to the browser build so that webpack and similar tools can find it there. Let me know if that misses anything from this PR.