Fix warning and directory restructure.

polkadot/cli/src/error.rs

@@ -0,0 +1,29 @@
+// 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/>.
+
+//! Initialization errors.
+
+use client;
+
+error_chain! {
+	foreign_links {
+		Io(::std::io::Error) #[doc="IO error"];
+		Cli(::clap::Error) #[doc="CLI error"];
+	}
+	links {
+		Client(client::error::Error, client::error::ErrorKind) #[doc="Client error"];
+    }
+}