📚 Add docs about how to create own n8n-nodes-module

docs/create-node.md

@@ -23,6 +23,79 @@ To simplify the development process we created a very basic CLI which creates bo
  1. Restart n8n and refresh the window that the new node gets displayed
 
 
+## Create own custom n8n-nodes-module
+
+If you want to create multiple custom nodes which are either:
+
+  - Only for yourself/your company
+  - Are only useful for a small number of people
+  - Require many or large dependencies
+
+It is best to create your own `n8n-nodes-module` which can be installed separately.
+That is a simple npm package that contains the nodes and is set up in a way
+that n8n can automatically find and load them on startup.
+
+When creating such a module the following rules have to be followed that n8n
+can automatically find the nodes in the module:
+
+  - The name of the module has to start with `n8n-nodes-`
+  - The `package.json` file has to contain a key `n8n` with the paths to nodes and credentials
+  - The module has to be installed alongside n8n
+
+An example starter module which contains one node and credentials and implements
+the  above can be found here:
+
+[https://github.com/n8n-io/n8n-nodes-starter](https://github.com/n8n-io/n8n-nodes-starter)
+
+
+### Setup to use n8n-nodes-module
+
+To use a custom `n8n-nodes-module` it simply has to be installed alongside n8n.
+For example like this:
+
+```bash
+# Create folder for n8n installation
+mkdir my-n8n
+cd my-n8n
+
+# Install n8n
+npm install n8n
+
+# Install custom nodes module
+npm install n8n-nodes-my-custom-nodes
+
+# Start n8n
+n8n
+```
+
+
+### Development/Testing of custom n8n-nodes-module
+
+Works actually the same as for any other npm module.
+
+Execute in the folder which contains the code of the custom `n8n-nodes-module`
+which should be loaded with n8n:
+
+```bash
+# Build the code
+npm run build
+
+# "Publish" the package locally
+npm link
+```
+
+Then in the folder in which n8n is installed:
+
+```bash
+# "Install" the above locally published module
+npm link n8n-nodes-my-custom-nodes
+
+# Start n8n
+n8n
+```
+
+
+
 ## Node Development Guidelines