Update README.md

MailboxValidator · web-flow · commit be812f3b22ea · 2018-07-06T17:33:37.000+08:00
diff --git a/README.md b/README.md
@@ -14,7 +14,9 @@ Installation
 
 To install this module type the following:
 
-   gem install mailboxvalidator-ruby
+	gem install mailboxvalidator-ruby
+
+   
 
 Dependencies
 ============
