fix(create-release-branch): improve error description

lib/shell/sh-is-release-branch-creation-allowed.js

@@ -11,7 +11,40 @@ module.exports = function (dep) {
         if (!isPatchAllowed) {
           const msg = `
             It's not allowed to create a patch version based on ${argv.baseTag}
-            Please first execute 'npx @daraff/create-bump-pr@latest' to bump the version on master
+            Please first execute 'npx @daraff/create-bump-pr@latest' to bump the tag version on master
+
+            ----------------------------------------------
+            Workflow for a Bump PR / Create Release Branch
+            ----------------------------------------------
+            1) Execute npx @daraff/create-bump-pr (see example and option description)
+              - the script automatically updates the README.md with an empty line to indicate a change
+              - the script create a PR to incite a new minor version
+            2) Go to github and merge the PR
+            3) Wait until the merged PR on master created a new minor github tag
+            4) Go to your repo again
+            5) Execute git pull --tags 
+            6) Execute npx @livingdocs/release-tools@latest create-release-branch again
+
+            -------
+            Example
+            -------
+            npx @daraff/create-bump-pr \
+              --token=<your-gh-token> \
+              --owner=<gh-owner> \
+              --repo=<gh-repo>
+
+            -------
+            Options
+            -------
+            ****token****
+            You need a personal github access token to create a bump PR.
+            Go to https://github.com/settings/tokens/new to create a token with 'repo' scope
+
+            ****owner****
+            The owner of the repository (e.g. livingdocsIO)
+
+            ****repo****
+            The repository name (e.g. livingdocs-server)            
           `
           return reject(new Error(msg))
         }