add release script

release.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Script to create a new release
+# ------------------------------
+
+# exit on error
+set -e
+
+# make sure we're on master
+BRANCH="$(git rev-parse --abbrev-ref HEAD)"
+if [[ "$BRANCH" != "master" ]]; then
+  echo "You're on branch '$BRANCH', you should be on 'master'."
+  exit
+fi
+
+# make sure README.md has been updated
+read -r -p "Has README.md been updated? (Y/n) " CONFIRM
+case "$CONFIRM" in
+n | N) exit ;;
+esac
+
+read -r -p "New version (x.y.z): " VERSION
+
+mvn versions:set -DgenerateBackupPoms=false -DnewVersion="$VERSION"
+git add .
+git commit -am "release $VERSION"
+git tag "$VERSION"
+
+read -r -p "Push master and tag $VERSION? (y/N) " CONFIRM
+case "$CONFIRM" in
+y | Y) git push --atomic origin master "$VERSION" ;;
+esac