RPC & Client (#21)

* Initial version of http server.

* Refactor the structure.

* add unassigned ports info.

* Rename servers to match conventions.

* Add client crate and some proper RPC implementations.

* Style & docs.

substrate/contracts/src/error.rs

@@ -16,14 +16,12 @@
 
 //! Rust executor possible errors.
 
-#![allow(missing_docs)]
-
 use serializer;
 use state_machine;
 
 error_chain! {
 	foreign_links {
-		InvalidData(serializer::Error);
+		InvalidData(serializer::Error) #[doc = "Unserializable Data"];
 	}
 
 	errors {

substrate/contracts/src/executor.rs

@@ -18,7 +18,7 @@
 
 use primitives::contract::{CallData, OutData};
 use serializer::{from_slice as de, to_vec as ser};
-use state_machine::{StaticExternalities, Externalities, Executor};
+use state_machine::{StaticExternalities, Externalities, CodeExecutor};
 
 use error::{Error, ErrorKind, Result};
 use auth;
@@ -42,7 +42,7 @@ impl RustExecutor {
 	const VALIDATOR_SET: u8 = 3;
 }
 
-impl Executor for RustExecutor {
+impl CodeExecutor for RustExecutor {
 	type Error = Error;
 
 	fn call_static<E: StaticExternalities<Self>>(

substrate/contracts/src/lib.rs

@@ -42,6 +42,6 @@ pub mod error;
 pub mod executor;
 
 /// Creates new RustExecutor for contracts.
-pub fn new() -> executor::RustExecutor {
+pub fn executor() -> executor::RustExecutor {
 	executor::RustExecutor::default()
 }