Add Ws Json rpc client and command line utils

parity/cli/mod.rs

@@ -31,6 +31,8 @@ usage! {
 		cmd_import: bool,
 		cmd_signer: bool,
 		cmd_new_token: bool,
+		cmd_sign: bool,
+		cmd_reject: bool,
 		cmd_snapshot: bool,
 		cmd_restore: bool,
 		cmd_ui: bool,
@@ -41,6 +43,7 @@ usage! {
 		arg_pid_file: String,
 		arg_file: Option<String>,
 		arg_path: Vec<String>,
+		arg_id: Option<usize>,
 
 		// Flags
 		// -- Legacy Options

parity/cli/usage.txt

@@ -12,6 +12,9 @@ Usage:
   parity import [ <file> ] [options]
   parity export (blocks | state) [ <file> ] [options]
   parity signer new-token [options]
+  parity signer list [options]
+  parity signer sign [ <id> ] [ --password FILE ] [options]
+  parity signer reject <id> [options]
   parity snapshot <file> [options]
   parity restore [ <file> ] [options]
   parity tools hash <file>