Inline Images

Per the org-mode [spec](http://orgmode.org/manual/Images-and-tables.html#Images-and-tables), you can include inline images as links without
any descriptive link text, like this:

[http://farm5.static.flickr.com/4049/4358074549_5efb8b4903.jpg](http://farm5.static.flickr.com/4049/4358074549_5efb8b4903.jpg)

I currently do not support the caption/link syntax, but I can include
the inline image. I recognize the following image file types:

 * .jpg
 * .png
 * .gif
 * .jpeg
 * .svg
 * .svgz

Sample .svg:

[https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg](https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg)

Sample .svgz:

[https://www.w3.org/Graphics/SVG/Test/20110816/svg/conform-viewers-01-t.svgz](https://www.w3.org/Graphics/SVG/Test/20110816/svg/conform-viewers-01-t.svgz)
