Get user information from the server and update the attribute
		Args:
			key			user key (default: me)
			return		(status code for the get request, dict user data)

def get_user(self, key = None):
		'''Get user information from the server and update the attribute
		Args:
			key			user key (default: me)
			return		(status code for the get request, dict user data)
		''' 	
		if key:
			uri = self.api_uri + "/users/" + key
		else:
			uri = self.api_uri + "/users/me"

		return self._req('get', uri)