Fix error from valgrind.
Add DeleteMethod in Json::Rpc::Server.
Add doxygen command for scons.
Fix system.describe method -> use "result" field.
Fix netstring undecoded problem in TcpServer.
Missing return.
Add more details for installation.
* Check JSON-RPC version in Handler::Check (2.0); * Add coding style document.
Add some comments.
Remove disconnected clients in TCP server.
