ClientAPIRequestExamples

Things the server should be able to do.

Add Node A, specifying
- authorization info like username/password
- anything else?
Add Node B
Add a credit relationship A <-> B specifying
- Currency
- Conversion Table to other credit relationships (empty, because neither A nor B have any other credit relationships)
Do some credit transactions between A and B, tracking the balance owed either way
Do a transac