title: How to check day is last date of month in ruby
body: <p>I want to check if a day is the last day of the month and if it is, for a function to return true, otherwise return false.</p>
  
  <p>For example, if I pass in an argument of "Sun, 30 Jun 2013", the function is to return true, because it is the last day of the month, however if I pass in the argument "Mon, 03 Jun 2013" the function is to return false.</p>
  
  <p>How can this be accomplished using Ruby.</p>