Merge branch 'code-snippet' into 'master'

description for Code Snippet

"Code Snippet" had no description, this adds one.

See merge request !48

source/glossary/index.html.md

@@ -84,7 +84,8 @@ Examination of a progam's code. The main aim is to maintain high standards quali
 ### Code Snippet
-*** Needs definition here
+A small amount of code. Usually for the purpose of showing other developers how
+to do something specific or reproduce a problem.
 ### Collaborator