added release script

release.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+last_version=`git describe | awk -F'-' '{print $1}'`
+normalized_last_version=$(echo "${last_version}" | awk '{gsub("v", ""); print $1}')
+
+echo "Give me the new version for this reelase (latest ${last_version})..."
+read new_version
+normalized_version=$(echo "${new_version}" | awk '{gsub("v", ""); print $1}')
+
+echo "Updating version information to ${new_version} latest ${last_version}..."
+echo "Give me a version description: (Ctrl+C to cancel)"
+read verdesc
+
+# create a new version file in messages directory
+echo "Give me the version notes to publish in the messages and release (end with '%')..."
+read -d '%' version_notes
+echo "$version_notes" > ./messages/$normalized_version.txt
+
+# modify messages.json to reflect the new version
+numlines=$(wc -l ./messages.json | awk '{print $1}')
+head -n $(($numlines - 2)) ./messages.json > ./messages.json.tmp
+mv ./messages.json.tmp ./messages.json
+echo  "    \"$normalized_last_version\": \"messages/$normalized_last_version.txt\"," >> ./messages.json
+echo  "    \"$normalized_version\": \"messages/$normalized_version.txt\"" >> ./messages.json
+echo  "}" >> ./messages.json
+cat ./messages.json | json_verify -q || error "invalid JSON in messages.json"
+
+# no errors continue with the commits
+git add ./messages/$normalized_version.txt ./messages.json
+git commit -m "Updated version from $last_version to $new_version"
+git tag -a $new_version -m "$verdesc"
+echo "git tag $new_version created, ready to push..."
+
+function error {
+	echo "error: $1"
+	exit 1
+}