Add contributors file

.mailmap

@@ -0,0 +1,3 @@
+Johannes Weiß <[email protected]>
+<[email protected]> <[email protected]>
+<[email protected]> <[email protected]>

CONTRIBUTORS.txt

@@ -13,5 +13,7 @@ needs to be listed here.
 
 - Cory Benfield <[email protected]>
 - Johannes Weiß <[email protected]>
-- Norman Maurer <[email protected]>
-- Tom Doron <[email protected]>
+
+**Updating this list**
+
+Please do not edit this file manually. It is generated using `./scripts/generate_contributors_list.sh`. If a name is misspelled or appearing multiple times: add an entry in `./.mailmap`

scripts/generate_contributors_list.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the SwiftNIO open source project
+##
+## Copyright (c) 2017-2018 Apple Inc. and the SwiftNIO project authors
+## Licensed under Apache License v2.0
+##
+## See LICENSE.txt for license information
+## See CONTRIBUTORS.txt for the list of SwiftNIO project authors
+##
+## SPDX-License-Identifier: Apache-2.0
+##
+##===----------------------------------------------------------------------===##
+
+set -eu
+here="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+contributors=$( cd "$here"/.. && git shortlog -es | cut -f2 | sed 's/^/- /' )
+
+cat > "$here/../CONTRIBUTORS.txt" <<- EOF
+	For the purpose of tracking copyright, this is the list of individuals and
+	organizations who have contributed source code to SwiftNIO.
+
+	For employees of an organization/company where the copyright of work done
+	by employees of that company is held by the company itself, only the company
+	needs to be listed here.
+
+	## COPYRIGHT HOLDERS
+
+	- Apple Inc. (all contributors with '@apple.com')
+
+	### Contributors
+
+	$contributors
+
+	**Updating this list**
+
+	Please do not edit this file manually. It is generated using \`./scripts/generate_contributors_list.sh\`. If a name is misspelled or appearing multiple times: add an entry in \`./.mailmap\`
+EOF