Creates a pipeline stage with the provided attributes.
		Args:
			name	required name string
			kwargs	{..} see StreakStage object for details
			return	(status code, stage dict)

def create_pipeline_stage(self, pipeline_key, name, **kwargs):
		'''Creates a pipeline stage with the provided attributes.
		Args:
			name	required name string
			kwargs	{..} see StreakStage object for details
			return	(status code, stage dict)
		'''
		#req sanity check
		if not (pipeline_key and name):
			return requests.codes.bad_request, None

		uri = '/'.join([
						self.api_uri,
						self.pipelines_suffix,
						pipeline_key,
						self.stages_suffix])
		
		kwargs.update({'name':name})

		new_box = StreakStage(**kwargs)
		
		code, data = self._req('put', uri, new_box.to_dict(rw = True))
		
		return code, data