update docs and examples

README.md

docs/html/_behaviours_8h.html

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docs/html/_button_8h.html

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docs/html/_button_behaviours_8h.html

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docs/html/_comms_behaviours_8h.html

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docs/html/_l_e_d_behaviours_8h.html

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docs/html/_name_dictionary_8h.html

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docs/html/_potentiometer_8h.html

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docs/html/_potentiometer_behaviours_8h.html

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docs/html/_rotary_encoder_8h.html

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