More explanation for each licence

FossilOrigin-Name: 7aa73b2e15ab61e8d765a167ba70ba2e96051eb718022dc0dbe9e08993131a07

Author: danshearer

LICENCES/README.md

@@ -1,15 +1,20 @@
-# Licenses
+# Licences
 
-This directory documents the licenses applying to the LumoSQL project.
+This directory documents the licences applying to the LumoSQL project.
 
 All files in this project should in addition have a [Software Package Data Exchange](https://spdx.dev)
 machine-readable header. 
 
-# MIT License
+# MIT Licence
 
-The [MIT License](https://en.wikipedia.org/wiki/MIT_License) applies to code in this project.
+The [MIT License](https://en.wikipedia.org/wiki/MIT_License) applies to code in
+this project. The MIT licence is probably the most-widely used Open Source
+licence, including by some of the world's largest companies. The MIT licence
+grants everyone the right to use the code for any purpose under copyright law.
 
-# Creative Commons License
+# Creative Commons Licencse
 
 The [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/) 
-license applies to documentation in this project.
+licence applies to documentation in this project and in the companion
+[LumoSQL documentation project](https://lumosql.org/lumodoc). Code and documentation are very 
+different, which is why specific licences have been developed for them.