Phase 1 of repo reorg (#719)

* Remove unneeded script

* Rename Substrate Demo -> Substrate

* Rename demo -> node

* Build wasm from last rename.

* Merge ed25519 into substrate-primitives

* Minor tweak

* Rename substrate -> core

* Move substrate-runtime-support to core/runtime/support

* Rename/move substrate-runtime-version

* Move codec up a level

* Rename substrate-codec -> parity-codec

* Move environmental up a level

* Move pwasm-* up to top, ready for removal

* Remove requirement of s-r-support from s-r-primitives

* Move core/runtime/primitives into core/runtime-primitives

* Remove s-r-support dep from s-r-version

* Remove dep of s-r-support from bft

* Remove dep of s-r-support from node/consensus

* Sever all other core deps from s-r-support

* Forgot the no_std directive

* Rename non-SRML modules to sr-* to avoid match clashes

* Move runtime/* to srml/*

* Rename substrate-runtime-* -> srml-*

* Move srml to top-level

substrate/core/serializer/src/lib.rs

@@ -0,0 +1,46 @@
+// Copyright 2017 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+// tag::description[]
+//! Substrate customizable serde serializer.
+//!
+//! The idea is that we can later change the implementation
+//! to something more compact, but for now we're using JSON.
+// end::description[]
+
+#![warn(missing_docs)]
+
+extern crate serde;
+extern crate serde_json;
+
+pub use serde_json::{from_str, from_slice, from_reader, Result, Error};
+
+const PROOF: &str = "Serializers are infallible; qed";
+
+/// Serialize the given data structure as a pretty-printed String of JSON.
+pub fn to_string_pretty<T: serde::Serialize + ?Sized>(value: &T) -> String {
+	serde_json::to_string_pretty(value).expect(PROOF)
+}
+
+/// Serialize the given data structure as a JSON byte vector.
+pub fn encode<T: serde::Serialize + ?Sized>(value: &T) -> Vec<u8> {
+	serde_json::to_vec(value).expect(PROOF)
+}
+
+/// Serialize the given data structure as JSON into the IO stream.
+pub fn to_writer<W: ::std::io::Write, T: serde::Serialize + ?Sized>(writer: W, value: &T) -> Result<()> {
+	serde_json::to_writer(writer, value)
+}