POST /datastores: Create a new item.

def create(self):
        """POST /datastores: Create a new item."""
        # url('datastores')
        content = request.environ['wsgi.input'].read(int(request.environ['CONTENT_LENGTH']))
        content = content.decode('utf8')
        content = simplejson.loads(content)
        new = DataStore(content['name'],
                        content['type'],
                        content['ogrstring'])
        results = meta.Session.add(new)
        meta.Session.commit()
        response.status = 201