Merge pull request #1738 from tyabe/fix_admin_template

Change email condition for default AR4.1 in minirecord

padrino-admin/lib/padrino-admin/generators/templates/account/minirecord.rb.tt

@@ -22,7 +22,7 @@ class <%= @model_name %> < ActiveRecord::Base
   # This method is for authentication purpose.
   #
   def self.authenticate(email, password)
-    account = first(:conditions => ["lower(email) = lower(?)", email]) if email.present?
+    account = where("lower(email) = lower(?)", email).first if email.present?
     account && account.has_password?(password) ? account : nil
   end