AUT_folder script: generate "toc.plist"

[libreliodev]

This is related to #22, #23,#24, #25, #27,#28 and #29

In #24, we implemented a process to parse the toc file identified in #23, and create (or update) an index entry in CloudSearch for each TOC entry.

We need to put these elements a plist. The plist should be an array with all articles that have been found. Each entry should contain:

• Title
• Subtitle (if available)
• The first 200 characters of the article

This plist should be saved as toc.plist at the root level.

[AlirezaAlgo]

@libreliodev I think Title is the te-title tag in tocentry. What about Subtitle?

[libreliodev]

@serverfire If there is no obvious answer, leave it empty for the time being

[libreliodev]

Continued in https://github.com/libreliodev/php/issues/46