Update player.js to load image custom player image using background-image.

In order to help loading time, the method of loading player images was moved from using <img> tags to <div style="background-image">.
Update player.js to load image custom player image using background-image.

In order to help loading time, the method of loading player images was moved from using <img> tags to <div style="background-image">.
Merge pull request #21 from badshar/master

Load image custom player image using background-image rather than an img tag.