increased clarity for readme example?

[DTrejo]

Hey, The example confused me, so this is my attempt to make it more clear, is my clarification correct? Thanks, D

elect(opts, function(err, node) {
   if (node.leader) {
     console.log('Hooray! I am the leader!');
   } else {
+    // you are not the leader, but might be elected at some later time.
     node.on('leader', function() {
-      console.log('I got elected as the leader!');
+      console.log('Old leader is down, and I was just elected as the leader!');
     });
   }
 });

Note that the example will not run out of the box because /my/service/path may not yet exist.

[mcavage]

Yep - that clarification is correct.