Merge pull request #5 from jreese/patch-1

Install black to check formatting

Author: tannewt

install.sh

@@ -18,4 +18,4 @@ sudo apt-get install libudev-dev libusb-1.0
 sudo apt-get install -y gettext
 pip install -r requirements.txt
 pip install circuitpython-build-tools Sphinx sphinx-rtd-theme
-pip install --force-reinstall pylint==1.9.2
+pip install --force-reinstall pylint==1.9.2 black==19.10b0