How to develop with YAML LS and VSCode together.

Let me know if anything is incorrect.

Author: NikolasKomonen

README.md

@@ -69,7 +69,7 @@ some_mapping: !Mapping-example
   some_mapping_key_2: some_mapping_value_2
 ```
 
-##### Associating a schema to a glob pattern via yaml.schemas: 
+##### Associating a schema to a glob pattern via yaml.schemas:
 yaml.schemas applies a schema to a file. In other words, the schema (placed on the left) is applied to the glob pattern on the right. Your schema can be local or online. Your schema must be a relative path and not an absolute path.
 
 When associating a schema it should follow the format below
@@ -138,6 +138,37 @@ This extension allows you to specify json schemas that you want to validate agai
 1. Open the client in vscode
 2. Make changes as neccessary and the run the code using F5
 
+##### Developing the client and server together
+1. Download both the [Yaml Language Server](https://github.com/redhat-developer/yaml-language-server) and this VSCode Yaml Client.
+
+2. Create a project with the directories in the following structure.
+  ```
+  ParentFolder/
+            ├──── vscode-yaml/
+            ├──── yaml-language-server/
+  ```
+3. Run `npm install` in both directories to initialize `node_modules` dependencies.
+4. In `vscode-yaml/src/extension.ts` set the `serverModule` variable to:
+    ```ts
+	serverModule = context.asAbsolutePath(path.join("..", "yaml-language-server", "out", "server", "src", "server.js"));
+	```
+	_This will redirect which YAML LS to use._
+
+5. In BOTH directories run:
+	```bash
+    npm run compile
+  	```
+
+6. To run the language server in VSCode, click `View -> Debug`, then from the drop down menu beside the green arrow select `Launch Extension (vscode-yaml)`, click the arrow, and a new VSCode window should load with the YAML LS running.
+
+7. To debug the language server in VSCode, from the same drop down menu
+   select
+   `Attach (yaml-language-server)`, and click the green arrow to start.
+   Ensure you've opened a YAML file or else the server would have not yet
+   started.
+
+**Note:** Disable or remove any existing implementations of the YAML Language server from VSCode or there will be conflicts.
+
 ##### Developing the server side
 1. To develop the language server visit https://github.com/redhat-developer/yaml-language-server