jsdom XMLHttpRequest reports no headers

[justincy]

jsdom expects rawHeaders to be available. They are being generated internally but just not passed on. This can be fixed by adding rawHeaders: response.rawHeaders || [] to this block of code:

node-replay/src/matcher.js

Lines 51 to 58 in f3c3214

	this.response = {
	version: response.version || '1.1',
	statusCode: response.statusCode && parseInt(response.statusCode, 10) || 200,
	statusMessage: response.statusMessage || '',
	headers: {},
	body: response.body ? response.body.slice(0) : [],
	trailers: {}
	};