Added quick licence information.
Catch extra errors (timeout).
Added lesoir.be rule
Move to OOP.

This is a huge commit. The whole code is ported to Object-Oritented Programming. This makes the code cleaner, which became required to deal with all the different cases, for example with encoding detection. Encoding detection now works better, and uses 3 different methods. HTML pages with an xml declaration are now supported. Feed urls with parameters (eg. "index.php?option=par") are also supported. Cache is now smarter, since it no longer grows indefinitely, since only in-use pages are kept in the cache. Caching is now mandatory. urllib (not urllib2) is no longer needed. Solved a possible crash with log function (when passing list of str with non-unicode encoging).
README is also updated.