code: def call(status)
        stat = File.stat(@path) if File.exist?(@path)
        if stat
          if stat.directory?
            if @permission
              if @permission.include?(:read) && !stat.readable?
                status.fail("#{@path} is not readable by #{ENV['USER']}")
              elsif @permission.include?(:write) && !stat.writable?
                status.fail("#{@path} is not writable by #{ENV['USER']}")
              else
                status.ok("#{@path} exists with #{@permission.collect{|a| a.to_s}.join('/')} permission")
              end
            else
              status.ok("#{@path} exists")
            end
          else
            status.fail("#{@path} is not a directory")
          end
        else
          status.fail("#{@path} does not exist")
        end
      end
docs: Check if a file system directory exists and has the correct access. This
   can be very useful to check if the application relies on a shared file sytem
   being mounted. The <tt>:path</tt> options must be supplied to the initializer. You
   may also supply an <tt>:permission</tt> option with the values <tt>:read</tt>, <tt>:write</tt>, or
   <tt>[:read, :write]</tt> to check the permission on the directory as well.
  
   === Example
  
     IsItWorking::Handler.new do |h|
       h.check :directory, :path => "/var/shared/myapp", :permission => [:read, :write]
     end