Add grunt watcher for development on resources.

This watcher triggers a shell command recooking the files whenever anything changes in resources.
Otherwise the command has to be executed manually everytime one wants to see the effect in a running instance.

.gitignore

@@ -15,7 +15,5 @@ src/
 var/
 .sass-cache
 /.ruby-version
-Gruntfile.js
 node_modules
-package.json
 temp_resources

Gruntfile.js

@@ -0,0 +1,20 @@
+module.exports = function(grunt) {
+
+  grunt.initConfig({
+    pkg: grunt.file.readJSON('package.json'),
+    watch: {
+      files: ['Gruntfile.js', 'ftw/**/*.js', 'ftw/**/*.css', 'ftw/**/*.scss'],
+      tasks: ['cook_resources']
+    },
+    shell: {
+      cook_resources: {
+        command: './bin/upgrade recook --all'
+      }
+    }
+  });
+
+  grunt.loadNpmTasks('grunt-contrib-watch');
+  grunt.loadNpmTasks('grunt-shell');
+
+  grunt.registerTask('cook_resources', ['shell:cook_resources']);
+};

README.rst

@@ -108,6 +108,18 @@ The Implementation needs to be done by yourself. `For an example check the Solr
 
 .. image:: https://raw.github.com/OneGov/plonetheme.onegov/master/docs/screenshot_filter.png
 
+Development
+-----------
+
+In Plone 5 working on resources is a pain because they have to be recooked after every
+change. Therefore there is a Grunt setup provided watching the resources and updating them.
+
+To setup and run the watcher do:
+
+::
+
+    npm install
+    grunt watch
 
 
 Print

docs/HISTORY.txt

@@ -6,6 +6,8 @@ Changelog
 
 - Add Plone 5.1 support and drop Plone 4.3. [mbaechtold, maethu, shylux, busykoala]
 
+- Add grunt setup for development. [busykoala]
+
 
 3.3.0 (2019-09-10)
 ------------------