Fixed README

Author: vaibhav9225

README.md

@@ -3,8 +3,9 @@ A java based implementation of NS Operation Queue.
 
 The following library provides the following features:
 - Creating async operations which can have dependencies on each other.
-- Adding a condition to the operator that needs to be met for its successful execution/
-- Adding an oberver to the operation that listens to its lifecycle events.
+- Adding a condition to the operator that needs to be met for its successful execution.
+- Adding an observer to the operation that listens to its lifecycle events.
+- Adding a completion listener to the operation that signal the completion of operation.
 
 Utils:
 - Timeout observer - This can be added to an operation to limit its execution time.
@@ -15,3 +16,5 @@ New features over NS Operation Queue:
 
 Missing features from NS Operation Queue:
 - Synchronous operations. (Only async operations supported.)
+
+Take a look at https://github.com/vaibhav9225/OperationQueueJava/blob/master/src/OperationQueueExample.java for more information.