Shortening the README.

	   We will use a docbook generated full documentation.
Moves srunner_create after #main-pre block placeholder.
Removes copyright notice. Keeps only the license.
Adds documentation generation using DocBook.

     * Adds checkgen.xml, DocBook source XML file.
     * Adds docbook.css.xml, CSS stylesheet for HTML output.
     * Adds Makefile targets for documentation generation.
     * Modifies Makefile for better maintainability.
Enhances gitignore.

	 * Do not track example.* unless it ends with .ts
Adds generated documentation files for convenience.