AFNetworking/AFJSONRPCClient — pull request #1 by avfonarev (2013-01-13 21:39:15+00:00)
Title: JSON-RPC 2.0 Parameter Structures

According to [JSON-RPC 2.0 Specification](http://www.jsonrpc.org/specification) (4.2 Parameter Structures), one can use _by-name_ parameters. This is something pretty common. Changed a few lines to support this. Also fixed a typo in README.md.