Update header and license

chinstrap

@@ -1,7 +1,28 @@
 #!/usr/bin/env zsh
 #
-# PENGUIN build tool
+# `chinstrap` is a tool for cloning (AUR), building (clean chroot),
+# and (optionally) uploading packages for use in third-party repos
+#
 # deps: jq, bash, curl, rsync, gpg, pacman, mkarchroot, makechrootpkg
+#
+# The MIT License (MIT)
+# Copyright (c) $COPYRIGHT_YEAR $COPYRIGHT_HOLDERS
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
 
 zmodload zsh/zutil
 zmodload zsh/mapfile