Add GPLv3 license and READMEs

* Source wordpress's readme.txt
* Generated for github README.md
* Notes for myself at README-DEV.md
Add composer with wp2md and wordpress plugin type
Add PHP 5.2 compatible composer
Adding basic DB migrations and plugin hooks
Merge branch 'issue/init' into develop
Add local config ignored
Create main test entities and relations tables

* With FKs
Add hello world test
Merge branch 'issue/schema' into develop
Adding shortcode processor with list method
Add dev-sqls
Add flourish as ORM and update table names style to it
Implement Test model/query (default findAll)

* Also custom reflectPhpDoc()
Implement tests list as simple OL list from DB

* Setup ORM
Merge branch 'issue/shortcode-list' into develop
Update flourish version
Actualize schema to WP custom post types and taxonomies

* Drop previous tables
* Add questions
Redirect flourish models to WP tables

* Define WP-related constants
Add WordPressFacade to split up WP related into one place
Add WordPress entities registrator on init hook

* Implement post type and taxonomies in registrator
* Generate labels in entity registrator