add mpd status readme #103

Job	Run time
build-arduino (release-v4.4, weather)	2m 13s
build (release-v4.4, calibration_helper)	3m 34s
build (release-v4.4, demo)	4m 14s
build (release-v4.4, dragon)	4m 20s
build (release-v4.4, grayscale_test)	3m 21s
build (release-v4.4, mpd_status)	3m 23s
build (release-v4.4, terminal)	4m 6s
build (release-v4.4, www-image)	3m 53s
build (release-v5.1, calibration_helper)	3m 51s
build (release-v5.1, demo)	4m 7s
build (release-v5.1, dragon)	3m 12s
build (release-v5.1, grayscale_test)	3m 20s
build (release-v5.1, mpd_status)	3m 33s
build (release-v5.1, terminal)	3m 38s
build (release-v5.1, www-image)	3m 51s
	54m 36s

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