Copied BS.py in the core dir

Copied BeautifulSoup.py in the software´s core dir. This is better
because BS doesn´t have to be installed.
Added Shell API

Added a Shell API so other programs can use this software easily via a
shell or system call (like os.system() in python)
Added a webservice API

Added a API for usage with an webservice like interface. The webapi.php
depends on the shell API.
Merge pull request #1 from philippmayrth/develop

Develop