Add nvmrc to the project and updated developing docs

.nvmrc

@@ -0,0 +1 @@
+4

CHANGELOG.txt

@@ -12,6 +12,7 @@ Changelog
  * Signal receivers for custom `Image` and `Rendition` models are connected automatically (Mike Dingjan)
  * `PageChooserBlock` can now accept a list/tuple of page models as `target_model` (Mikalai Radchuk)
  * Styling tweaks for the ModelAdmin's `IndexView` to be more inline with the Wagtail styleguide (Andy Babic)
+ * Added `.nvmrc` to the project root for Node versioning support (Janneke Janssen)
  * Fix: Marked 'Date from' / 'Date to' strings in wagtailforms for translation (Vorlif)
  * Fix: Unreliable preview is now reliable by always opening in a new window (Kjartan Sverrisson)
  * Fix: Fixed placement of `{{ block.super }}` in `snippets/type_index.html` (LB (Ben Johnston))

docs/contributing/developing.rst

@@ -15,7 +15,10 @@ If you'd prefer to set up all the components manually, read on. These instructio
 Setting up the Wagtail codebase
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Install Node.js, version 4.x, 5.x or 6.x. Instructions for installing Node.js can be found on the `Node.js download page <https://nodejs.org/download/>`_. You will also need to install the **libjpeg** and **zlib** libraries, if you haven't done so already - see Pillow's `platform-specific installation instructions <http://pillow.readthedocs.org/en/latest/installation.html#external-libraries>`_.
+Install Node.js, version 4.x, 5.x or 6.x. Instructions for installing Node.js can be found on the `Node.js download page <https://nodejs.org/download/>`_.
+You can also use Node version manager (nvm) since Wagtail supplies a ``.nvmrc`` file in the root of the project with the minimum required Node version - see nvm's `installation instructions <https://github.com/creationix/nvm>`_.
+
+You will also need to install the **libjpeg** and **zlib** libraries, if you haven't done so already - see Pillow's `platform-specific installation instructions <http://pillow.readthedocs.org/en/latest/installation.html#external-libraries>`_.
 
 Clone a copy of `the Wagtail codebase <https://github.com/wagtail/wagtail>`_:
 
@@ -30,6 +33,12 @@ With your preferred virtualenv activated, install the Wagtail package in develop
 
     $ pip install -e .[testing,docs] -U
 
+Install Node through nvm (optional):
+
+.. code-block:: console
+
+    $ nvm install
+
 Install the tool chain for building static assets:
 
 .. code-block:: console

docs/releases/1.10.rst

@@ -22,6 +22,7 @@ Other features
  * Signal receivers for custom ``Image`` and ``Rendition`` models are connected automatically (Mike Dingjan)
  * ``PageChooserBlock`` can now accept a list/tuple of page models as ``target_model`` (Mikalai Radchuk)
  * Styling tweaks for the ModelAdmin's ``IndexView`` to be more inline with the Wagtail styleguide (Andy Babic)
+ * Added `.nvmrc` to the project root for Node versioning support (Janneke Janssen)
 
 
 Bug fixes

package.json

@@ -3,6 +3,9 @@
   "version": "1.0.0",
   "repository": "https://github.com/wagtail/wagtail",
   "private": true,
+  "engines": {
+    "node": ">= 4"
+  },
   "browser": {},
   "browserify": {
     "transform": [