Merge branch 'hotfix-yarn-lock' into 'rails'

Soportar sitios sin yarn.lock

See merge request sutty/sutty!53

app/models/deploy_local.rb

@@ -80,7 +80,7 @@ class DeployLocal < Deploy
 
   # Corre yarn dentro del repositorio
   def yarn
-    return unless yarn_lock?
+    return true unless yarn_lock?
 
     run 'yarn'
   end