Add .gitignore and update-version script

.gitignore

@@ -0,0 +1,4 @@
+__pycache__
+/*.egg*
+/build
+/dist

update-version

@@ -0,0 +1,16 @@
+#!/bin/bash -eu
+
+set -o pipefail
+
+readonly VERSION=${1:?}
+
+
+cd "$(git rev-parse --show-toplevel)"
+
+sed -i "s/^\(__version__ = \"\).*\(\"\)/\1$VERSION\2/w /dev/stdout" hddfancontrol/__init__.py
+
+git add hddfancontrol/__init__.py
+
+git commit -m "Version ${VERSION}"
+
+git tag -m "Version ${VERSION}" ${VERSION}