README.md in smtpapi-0.0.5 vs README.md in smtpapi-0.0.6

@@ -131,9 +131,27 @@
   }
 }
 header.set_filters(filter)
 ```
 
+### set_send_at
+
+```ruby
+header    = Smtpapi::Header.new
+lt = Time.local(2014, 8, 29, 17, 56, 35)
+header.set_send_at(lt)
+```
+
+### set_send_each_at
+
+```ruby
+header    = Smtpapi::Header.new
+lt1       = Time.local(2014,  8, 29, 17, 56, 35)
+lt2       = Time.local(2013, 12, 31,  0,  0,  0)
+lt3       = Time.local(2015,  9,  1,  4,  5,  6)
+header.set_send_each_at([lt1, lt2, lt3])
+```
+
 ## Contributing
 
 1. Fork it ( http://github.com/sendgridjp/smtpapi-ruby/fork )
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Add some feature'`)