Remove X-UA-Compatible - see desc

<meta http-equiv="X-UA-Compatible" content="IE=edge"> not required these days, and meta tag is not the correct place causing invalidation errors. See http://www.validatethis.co.uk/news/fix-bad-value-x-ua-compatible-once-and-for-all/
Merge pull request #85 from digitaltoast/patch-2

Remove X-UA-Compatible - see desc