viewer: update commands in readme for yarn

1 files changed, 11 insertions, 8 deletions

diff --git a/viewer/readme.md b/viewer/readme.md
index 3757f3e..f8c1a3f 100644
--- a/viewer/readme.md
+++ b/viewer/readme.md
@@ -3,8 +3,9 @@
 If you get errors with optionals and coalesce, enable the Vetur global preference: useWorkspaceDependencies
 
 ## Project setup
-```
-npm install
+
+```sh
+yarn
 ```
 
 ### Compiles and hot-reloads for development
@@ -12,18 +13,20 @@ npm install
 The viewer DevServer will serve the compiled version of the example gallery by default.
 To override, create a file .env.development.local
 
-```
-npm run serve
+```sh
+yarn run serve
 ```
 
 ### Compiles and minifies for production
-```
-npm run build
+
+```sh
+yarn run build
 ```
 
 ### Lints and fixes files
-```
-npm run lint
+
+```sh
+yarn run lint
 ```
 
 ### Customize configuration