Correct license named in README (#17)

* Add link to PDF document for training manual

* Update README for metadata interpretation

* Correct license named in README

Author: wcarthur

README.md

@@ -59,9 +59,9 @@ run_test_all.cmd script from the main BAL directory.
 License
 -------
 
-This repository is licensed under Creative Commons 4.0
-International. See the [LICENSE deed](LICENSE) in this repository for
-details.
+This repository is licensed under an Apache Version 2.0 license. See
+the [LICENSE deed](LICENSE) in this repository for details.
+
 
 
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