Added aux_requirements.txt defining auxiliary requirements not needed for base usage of package but required by some parts of it to work
Defined pyqp.version and pyqp.version_info
Uncommented 'from six import map'
Removed 'from __future__' import form pyqp.__init__ as this import is module wide thus not needed there
Added proof-of-concept for Tornad platform (v 4.0.0) integration