added PKGBUILD for Arch linux

PKGBUILD

@@ -0,0 +1,24 @@
+# Maintainer: Michael Krayer <michael.krayer@posteo.de>
+
+pkgname=archivemail-mk
+pkgver=0.9.0
+pkgrel=3
+pkgdesc='A tool for archiving and compressing old email in mailboxes'
+arch=('any')
+url='http://archivemail.sourceforge.net/'
+license=('GPL')
+depends=('python2')
+makedepends=('git')
+conflicts=('archivemail')
+provides=('archivemail')
+source=('git+https://git.mkray.de/mwtkrayer/archivemail-mk.git')
+md5sums=('SKIP')
+
+package() {
+	cd $srcdir/$pkgname
+	for f in setup.py test_archivemail archivemail; do
+		sed 's#/usr/bin/env python#/usr/bin/env python2#g' -i $f
+	done
+
+	python2 setup.py install --root=$pkgdir
+}