Use best practices in examples

[sole]

Not using top and left but transform properties, etc

[sole]

Also simple html header without the long content-type <meta>. Goes from

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> to <meta charset="utf-8">

[sole]

Also update the examples in the README so they don't use top or left

[dalisoft]

Hi @sole! This is good idea, but tween.js main feature is working with older browser! Why we need remove these properties or have polyfill for transform for IE 6-9, Opera less than 9 and etc?

[thednp]

Or make a cross-browser example.

[dalisoft]

All old comment content are deleted, sorry EDITED: yea you're right. Now we should best and latest examples for better expierence