add instructions for new programs #1

Job	Run time
i2c_scanner-argon-4.2.0 / i2c_scanner-argon-4.2.0	33s
i2c_scanner-p2-6.3.2 / i2c_scanner-p2-6.3.2	45s
i2c_scanner-photon-2.3.1 / i2c_scanner-photon-2.3.1	32s
	1m 50s

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