* document user endpoints, allow for empty request/response bodies
* document more user endpoints, improve debugging output if no details are specified
* document some more user endpoints
* minor cleanup
* FIX: flakey tests due to bad regex
- Read in schemas from actual json files instead of a ruby hash. This is
helpful because we will be automatically generating .json schema files
from json responses and don't want to manually write ruby hash schema
files.
- Create a helper method for rspec schema validation tests to dry up code
