Fix python 3 support and add soft display to examples #9
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I'm mainly using python 3, so I fixed some lines to make it work there (make some strings bytearrays, and a np.arange to range()). I've also added the software display to all the examples, which can be enabled with the
MOCK_RPI
env variable. I have documented it in README.md.Also, I added a default gitignore from https://github.com/github/gitignore
Still needs to be verified working with the RPi.