Update docs about vscode-client (#633)

Author: youben11

vscode-client/README.md

@@ -6,28 +6,27 @@ at once with minimal extra configuration per language.
 
 ## Using this extension
 
-1. Follow the [Getting Started instructions for this project](../README.md)
-1. Run `npm install`.
-1. Run `npm run vscode` to start a new VSCode instance. Use `npm run vscode -- /path/to/mydir` to open the editor to a specific directory.
-1. Open a `.go` file and hover over text to start using the Go language server.
+
+1. Follow the [Develop against VS Code instructions](/../../#develop-against-vs-code)
+1. Open a `.py` file and hover over text to start using the Python language server.
 
 To view a language server's stderr output in VSCode, select View → Output.
 To debug further, see the "Hacking on this extension" section below.
 
-After updating the binary for a language server (during development or after an upgrade), just kill the process (e.g., `killall langserver-go`).
+After updating the binary for a language server (during development or after an upgrade), just kill the process (e.g., `killall pyls`).
 VSCode will automatically restart and reconnect to the language server process.
 
 > **Note for those who use VSCode as their primary editor:** Because this extension's functionality conflicts with other VSCode extensions
-(e.g., showing Go hover information), the `npm run vscode` script launches an separate instance of VSCode and stores its config in `../.vscode-dev`.
+(e.g., showing Python hover information), the `yarn run vscode` script launches a separate instance of VSCode and stores its config in `../.vscode-dev`.
 It will still show your existing extensions in the panel (which seems to be a VSCode bug), but they won't be activated.
 
 ## Adding a language server
 
-Register your language server at the bottom of [`extension.ts`](https://github.com/sourcegraph/langserver/blob/master/vscode-client/src/extension.ts).
+Register your language server at the bottom of [`extension.ts`](src/extension.ts).
 
 ## Hacking on this extension
 
-1. Run `npm install` in this directory (`vscode-client`).
+1. Run `yarn install` in this directory (`vscode-client`).
 1. Open this directory by itself in Visual Studio Code.
 1. Hit F5 to open a new VSCode instance in a debugger running this extension. (This is equivalent to going to the Debug pane on the left and running the "Launch Extension" task.)