Adds auto to the allowed keywords

Alex Bea · web-flow · commit e83a0ae90b58 · 2019-09-19T15:28:58.000-05:00
diff --git a/index.js b/index.js
@@ -85,7 +85,8 @@ module.exports = {
           'currentColor',
           'inherit',
           'initial',
-          'transparent'
+          'transparent',
+          'auto'
         ]
       }
     ]
