Gets a thread specified by thread_key
		Args:
			thread_key 		thread to get
			returns 		a thread dict

def get_thread(self, thread_key):
		'''Gets a thread specified by thread_key
		Args:
			thread_key 		thread to get
			returns 		a thread dict
		'''
		uri = '/'.join([self.api_uri,
						self.threads_suffix,
						thread_key
						])
		return self._req('get', uri)