Support Images

[ysb33r]

See https://leanpub.com/help/manual#leanpub-auto-how-to-insert-an-image

See http://asciidoctor.org/docs/user-manual/#images

[ysb33r]

Basic inline image:

![This is the Image Caption](images/NameOfImage.png)

Basic block image:

!["This is the Image Caption"](images/NameOfImage.png "alttext")

For block images it is also necessary to support the appropriate attributes

{width=60%,float=left}
![This is the Image Caption](images/NameOfImage.png)

The valid values for float are:

• inside
• outside
• left
• right These will be taken from the float metadata on the image. If an illegal value is found it will be logged, but processing will continue. Also need to handle this is it comes as part of a [http://asciidoctor.org/docs/user-manual/#positioning-roles](positioning role) i.e. [.right.text-center].

Other things to do:

• Titles above images will be converted.
• :figure-caption!: will be ignored
• Metadata leanpub="width 60%" will translate to {width=60%} on block images.

What I am not sure about. Is it possible to center the image, when align="center" is in the metadata.