Adding plain params to requests. Generated from json schema.
Sorting plain params to correspond to code samples.

Also adding a couple that were missing.
Correcting a few JSONPath expressions.
Incorporating Constanze's edits and cleaning up a few things.
Fixing a few typos, incorrect jsonpaths, and types.
Merge pull request #458 from dwcramer/addingPlainParams

Adding plain params to requests. Generated from json schema.