Pyramid-georest

Fixed issues:

* [2](https://github.com/vvmruder/pyramid_georest/issues/2): Fixed problem where the relationship properties
wasn't loaded correctly .

Fixed issues:

* [2](https://github.com/vvmruder/pyramid_georest/issues/2): Fixed lost m to n handling.

Fixed issues:

* [1](https://github.com/vvmruder/pyramid_georest/pull/1): Fixed encoding issue in filter parameter.

First usable version of this package (propably not pip save).

This version ships with the basic parts of REST and some updates which mainly belong to the sqlalchemy
session handling and the filtering system.