Add mk-git-alias

diff --git a/mk-git-alias b/mk-git-alias
new file mode 100755 (executable)
index 0000000..c34d294
--- /dev/null
+++ b/mk-git-alias
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+exec git config --local alias.tag-with-version \
+   "!exec git tag -s \`python setup.py --version\`"