Merge pull request #2 from VentureSpirit/allow-subdomains

Added a fix for nil domain.

Author: andruby

lib/email_domain_inclusion.rb

@@ -14,11 +14,13 @@ def validate_each(record, attribute, value)
   private
   def valid_subdomain?(value)
     domain = domain_from_email(value)
+    return false unless domain
     allowed_domains.any? { |allowed_domain| domain.end_with? ".#{allowed_domain}" }
   end
 
   def valid_full_domain?(value)
     domain = domain_from_email(value)
+    return false unless domain
     allowed_domains.include?(domain)
   end