Merge pull request #37 from rakyll/monochrome

rename ssd1306 to monochromeoled

Merge pull request #35 from mattetti/master

fix references to old grove path

flatten the package organization and update the README as per #33

Merge pull request #34 from rakyll/master

Merge pull request #31 from mattetti/ma-simplify-example

accel3xdigital: better handle the error in the example

address #29 - simplify example

Update README.md

allow users to modify the buffer with an image without drawing

Merge pull request #32 from rakyll/master

fix the broken build

Merge pull request #27 from rakyll/readability

piglow: various readability improvements