Improve the release documentation

.travis.yml

@@ -37,6 +37,7 @@ before_install:
 - /opt/google/chrome/chrome --version
 - git config --global user.name "Travis"
 - git config --global user.email "travis@travis-ci.org"
+- buildtools/set-version
 
 install:
 - export GIT_BRANCH=${TRAVIS_BRANCH}

buildtools/set-version

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import json
+import os
+import re
+
+if len(os.environ.get("TRAVIS_TAG", "")) == 0:
+    exit(0)
+
+with open("package.json") as package_json_file:
+    package_json = json.loads(package_json_file.read())
+
+version = os.environ["TRAVIS_TAG"]
+match_dev = re.match(r"([0-9]+\.[0-9]+\.[0-9]+)-([a-z]+)\.([0-9]+)", version)
+if match_dev is None:
+    if package_json["version"] == version:
+        exit(0)
+    else:
+        exit(1)
+
+package_json["version"] = version
+
+with open("package.json", "w") as package_json_file:
+    package_json_file.write(json.dumps(package_json, sort_keys=True, indent=2))

docs/developer-guide.md

@@ -63,12 +63,34 @@ fdescribe('...', function() {
 
 ## Create a package on npm
 
-Set the version in the `package.json` file.
+Checkout the latest version
+
+```
+git checkout master
+git fetch origin
+git reset --hard origin/master
+```
 
 Create a tag named the same as the version.
+```
+git tag <version>
+git push <version>
+```
 
 Travis will create a new package on npm.
 
+
+If you create a new release, bump version in the package.json file:
+```
+git checkout -b bump
+vi package.json
+git add package.json
+git commit -m "Bump version to 2.4.x+1"
+git push origin bump
+```
+
+Do the pull request
+
 ## Create a new stabilisation branch
 
 When we create a new stabilisation branch we should also duplicate the localisation.