PSR-4 compatible Autoloading

After hard work from Jakob and Andrea, we now use the PSR-4 compatible autoloading from composer.
All external js and css is now combined into two files (thanks to gulp, bower and npm),
which means you do not depend on external resources anymore.
For developers, you can now use gulp to transcompile scss and jsx.

Next release will cover group feature && unit tests!
i also decided to remove the chat feature, since it does not feel right.

Announcing Version 1.1

Today i`am proud to announce v1.1 of our SocialNetwork

We fixed quite a lot of bugs, added some cool new features (like mentions, notifications, oauth2)
i like to give a huge shout out to

Jakob for code contribution and mentoring
Besn for infrastructure and testing
Martin & Ulamnet for testing and bug reporting