fixed textbook name in license, fixed license cite in readme

Author: trevorcampbell

LICENSE.md

@@ -1,6 +1,6 @@
 #License
 
-An Introduction to Data Science is made available under the **Attribution-NonCommercial-ShareAlike 4.0 International** ([CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/)). 
+This textbook is made available under the **Attribution-NonCommercial-ShareAlike 4.0 International** ([CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/)). 
 
 This is a human-readable summary of (and not a substitute for) the [license](https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode).
 

README.md

@@ -229,4 +229,5 @@ docker run --rm -it -p 8888:8888 -v $PWD:/home/rstudio/introduction-to-datascien
 
 ## License Information
 
-[Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)](https://creativecommons.org/licenses/by-nc-sa/4.0/)
+This textbook is offered under the [Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License](https://creativecommons.org/licenses/by-nc-sa/4.0/).
+See [the license file](LICENSE.md) for more information.