Optional requirements missing

[tekktrik]

Optional requirements used in the examples are missing from optional_requirements.txt. Adding them there will better allow people to download them when wanting to use examples.

[zeerakb1]

hello @tekktrik, can you tell me what requirements need to be added?

[tekktrik]

Looking at the examples, adafruit-circuitpython-sdcard needs to be added.

[tekktrik]

Do you want to submit a PR, @zeerakb1?

[zeerakb1]

yes

[tekktrik]

Sweet! And just a heads up, the actual library name is adafruit-circuitpython-sd!