V2 API Enabling (#33)

* node height return value and documentation

* rustfmt

* add parameter struct for initiate tx functions

* rustfmt

* change tx estimate to use InitTxArgs

* rustfmt

* transaction estimate

* rustfmt

* initiate tx args fixed

* add send args to init

* rustfmt

* last owner api documentation

* api 2 wiring

* rustfmt

* wiring in V2 JSON-RPC API

* rustfmt

* some documentation on endpoint

* shorten endpoints

api/src/foreign_rpc.rs

@@ -21,7 +21,10 @@ use crate::libwallet::ErrorKind;
 use crate::Foreign;
 use easy_jsonrpc;
 
-/// Public definition used to generate jsonrpc api for Foreign.
+/// Public definition used to generate Foreign jsonrpc api.
+/// * When running `grin-wallet listen` with defaults, the V2 api is available at
+/// `localhost:3415/v2/foreign`
+/// * The endpoint only supports POST operations, with the json-rpc request as the body
 #[easy_jsonrpc::rpc]
 pub trait ForeignRpc {
 	/**

api/src/owner_rpc.rs

@@ -26,7 +26,10 @@ use crate::libwallet::ErrorKind;
 use crate::Owner;
 use easy_jsonrpc;
 
-/// Public definition used to generate jsonrpc api for Owner.
+/// Public definition used to generate Owner jsonrpc api.
+/// * When running `grin-wallet listen` with defaults, the V2 api is available at
+/// `localhost:3420/v2/owner`
+/// * The endpoint only supports POST operations, with the json-rpc request as the body
 #[easy_jsonrpc::rpc]
 pub trait OwnerRpc {
 	/**