Add Alan Cookbook

[dyskos]

Alright, this is the completed port of the Alan Cookbook to Asciidoc.

A few things to note:

• This is not an entirely vanilla port; I have taken the liberty of correcting typos where I found them as well as clarifying the use of confusing language at times.
• I have not, however, attempted to restructure the book in any way or update any of the code samples contained therein (except for obvious typos in the code samples) so there is plenty of available work to do yet.

Please let me know if there is anything else to do before approving this pull request!

[tajmone]

Thanks a lot @Dyskos! this was a huge contribution to the project.