.numpy() was missing in code example: tf.add(1, 2).numpy()

README.md

@@ -65,7 +65,7 @@ $ python
 ```python
 >>> import tensorflow as tf
 >>> tf.enable_eager_execution()
->>> tf.add(1, 2)
+>>> tf.add(1, 2).numpy()
 3
 >>> hello = tf.constant('Hello, TensorFlow!')
 >>> hello.numpy()