Fix the pointer to bob.rppg.base in the docs

See merge request !9

Resolve "Potential bug when computing average color from mask"

Closes #15

See merge request !8

[scripts] updated the retrieved colors from mask, to be consistent with changes from previous commit (green only)

Fixed recipe to test all modules

See merge request !7

Resolve "Package depends on both bob.db.cohface and bob.db.hci_tagging"

Closes #10

See merge request !6