Activate caching

Change this value to true then run nitunit to cache the responses from the Github API.

Default is false.

Property definitions

github $ MockGithubAPI :: update_responses_cache
	# Activate caching
	#
	# Change this value to `true` then run nitunit to cache the responses
	# from the Github API.
	#
	# Default is `false`.
	var update_responses_cache = false
lib/github/tests/test_api.nit:127,2--133,35