Incorrect handling of protocol relative URLs

[johndaniels]

in Firefox and Chrome, history.pushState('//example.com/foo') will be equivalent to history.pushSate('/foo') bringing you to 'http://example.com/foo'.

In history.js, history.pushState('//example.com/foo') brings you to 'http://example.com/example.com/foo'. History.js should recognize that as a protocol relative URL and treat it accordingly.

[jacobsvante]

I've noticed this as well. Protocol-less URLs are an awesome feat to have if making your page available both with http and https. I'll submit a pull request in a few minutes.