Upgrade upstream request dependency

Allows the use of http_proxy and related environment variables for the
bosh endpoint.
Merge pull request #78 from rakutentech/upgrade-request-package

Upgrade upstream request dependency
1.0.0-alpha18
Use debug instead of console.log
Merge pull request #79 from mweibel/patch-1

Use debug instead of console.log
Updating browserified file - build number 313\n\n[skip ci]
Small bits of tidy up
Add 'full-test' to package.json
Merge branch 'master' of github.com:node-xmpp/node-xmpp-client into bosh-browser-tests

Conflicts:
	lib/websockets.js