Added Newtonsoft.Json package
Removed empty lines and old using statement
Add user before linking identity for test to pass
Ignore route tests when authenticated for now

Nancy doesn't seem to have a way of adding claims to the context, least
none that I can find.
Fixed capitalization on test method name
Added update and delete for links

Tests are included here plus a minor changes to the Exception names
Moved adding a user to the constructor

Wanted to eliminate some duplicate code that has to run for almost every
test, also removed some extra line breaks.
Standardized exceptions to

InvalidOperationException and renamed test methods to match the new
exception type.
Removed unused using statements
Removed testing route
Removed old google link