Update badge icons of README.rdoc #99

Job	Run time
test (3.2 redmica/[email protected], false)	28s
test (3.1 redmica/[email protected], false)	56s
test (3.0 redmica/[email protected], false)	1m 3s
test (2.7 redmica/[email protected], false)	1m 13s
test (3.2 redmine/[email protected], false)	37s
test (3.1 redmine/[email protected], false)	55s
test (3.0 redmine/[email protected], false)	53s
test (2.7 redmine/[email protected], false)	59s
test (2.6 redmine/[email protected], false)	1m 5s
test (2.6 redmine/[email protected], false)	1m 0s
test (2.6 redmine/[email protected], false)	1m 53s
test (2.5 redmine/[email protected], false)	1m 37s
test (3.2 redmica/redmica@master, true)	34s
	13m 13s

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