yarn commands in deploy.sh

.ci/deploy.sh

@@ -39,8 +39,8 @@ do
                 cd $BLADE
 
                 # install npm
-                yarn install -g yo grunt-cli generator-reveal
-                yarn install
+                yarn add -g yo grunt-cli generator-reveal
+                yarn
 
                 # build the unstable version - can be optimized
                 git submodule update --init