Added PKGBUILD for AUR on Archlinux

PKGBUILD

@@ -0,0 +1,39 @@
+# Maintainer: pcarrier
+
+pkgname=gauth
+pkgver=1.0
+pkgrel=1
+pkgdesc="Local laptop/desktop Google Authenticator written in go"
+arch=('x86_64' 'i686')
+url="https://github.com/pcarrier/gauth"
+license=('MIT')
+depends=('go')
+makedepends=('mercurial')
+options=('!strip' '!emptydirs')
+_gourl=github.com/pcarrier/gauth
+
+build() {
+  GOPATH="$srcdir" go get -fix -v -x ${_gourl}/...
+}
+
+check() {
+  GOPATH="$GOPATH:$srcdir" go test -v -x ${_gourl}/...
+}
+
+package() {
+  mkdir -p "$pkgdir/usr/bin"
+  install -p -m755 "$srcdir/bin/"* "$pkgdir/usr/bin"
+
+  mkdir -p "$pkgdir/$GOPATH"
+  cp -Rv --preserve=timestamps "$srcdir/"{src,pkg} "$pkgdir/$GOPATH"
+
+  # Package license (if available)
+  for f in LICENSE COPYING LICENSE.* COPYING.*; do
+      if [ -e "$srcdir/src/$_gourl/$f" ]; then
+            install -Dm644 "$srcdir/src/$_gourl/$f" \
+                    "$pkgdir/usr/share/licenses/$pkgname/$f"
+      fi
+      done
+}
+
+# vim:set ts=2 sw=2 et: