Update RELEASE.md

Author: yinghsienwu

RELEASE.md

@@ -2,6 +2,17 @@
 
 *   Add notes for next release here.
 
+# Release 0.1.9
+
+*   Added Kaggle integration
+
+# Release 0.1.8
+
+*   `cloud_fit` now moved to a sub-module under `Tuner`
+*   HParams plugin integration with DistributingCloudTuner
+*   Added integration tests
+*   Small bug fixes.
+
 # Release 0.1.7
 
 *   `cloud_fit` uses pickle instead of cloudpickle.