Baryton Saxophone - Selenium Server install

This is a simple package that downloads Selenium Server and
provides a node api for accessing the path to the jar file. There are other packages like this, but I wanted to make
sure I had an updated package to include in Browsertime.

Why the funny name you ask? Well, there are countless Selenium modules in npm.
Keywords and the description for the module allows you to find it anyway, so might as well choose a unique name.

How to use?
``node
var server = require('baryton-saxophone').seleniumServer;

var p = server.jarPath();
// launch server from path
``