Add automatic formatting and license.

other/format.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+cd ..
+
+# Add the license file.
+files=$(find ./src ./include ./examples  -name "*.hpp" -o -name "*.cpp")
+for file in $files
+do
+  if ! grep -q Copyright $file
+  then
+    cat ./other/license_headers.cpp $file >$file.new && mv $file.new $file
+  fi
+done
+
+# Use clang-format.
+for file in $files
+do
+  clang-format -i $file
+done

other/license_headers.cpp

@@ -0,0 +1,4 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+