Merge pull request #129 from segor/patch-1

 Updated link to license pdf

docs/index.md

@@ -18,10 +18,10 @@ Customers who do not qualify for the community license can visit the Prism Libra
 Under no circumstances can you use this product without (1) either a Community License or a Commercial License and (2) without agreeing and abiding by Prism's license containing all terms and conditions. 
 
 The Prism license that contains the terms and conditions can be found at
-https://prismlibrary.com/downloads/prism_license.pdf
+https://cdn.prismlibrary.com/downloads/prism_license.pdf
 ```
 
-[Download the full Prism License](https://prismlibrary.com/downloads/prism_license.pdf)
+[Download the full Prism License](https://cdn.prismlibrary.com/downloads/prism_license.pdf)
 
 ### Commercial Plus License