Fix links to the allennlp-as-a-library tutorials (allenai#1279)

* Fix links to the allennlp-as-a-library tutorials

* Update README.md

tutorials/README.md

@@ -8,8 +8,8 @@ These tutorials relate to the version of AllenNLP at the git commit SHA you are
 * [Training and Evaluating Models](getting_started/training_and_evaluating.md)
 * [Configuring Experiments](getting_started/configuration.md)
 * [Creating a Model](getting_started/creating_a_model.md)
-* [Using AllenNLP in Your Project](getting_started/using_in_your_repo.md)
-* [Making Predictions and Creating a Demo](getting_started/making_predictions_and_creating_a_demo.md)
+* [Using AllenNLP as a Library (Part 1) - Datasets and Models](getting_started/using_as_a_library_pt1.md)
+* [Using AllenNLP as a Library (Part 2) - Predictions and Demos](getting_started/using_as_a_library_pt2.md)
 * [Laziness in AllenNLP](getting_started/laziness.md)
 
 ## How-to