Fix warning and directory restructure.

substrate/polkadot/src/main.rs

@@ -0,0 +1,30 @@
+// Copyright 2017 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot 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.
+
+// Polkadot 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 Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Polkadot CLI
+
+#![warn(missing_docs)]
+
+extern crate polkadot_cli as cli;
+
+#[macro_use]
+extern crate error_chain;
+
+quick_main!(run);
+
+fn run() -> cli::error::Result<()> {
+	cli::run(::std::env::args())
+}