Add i18n support to Snippet in EN/BR

Author: GuiDevloper

snippets/Batteries.njs renamed to i18n/en-US/snippets/Batteries.njs

@@ -8,7 +8,7 @@ class Vanilla extends Nullstack {
     this.count++
   }
 
-  // this is bound by default
+  // 'this' is bound by default
   render() {
     return (
       <button onclick={this.increment}>