convert to using tagged download from github

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=petrified
 pkgver=1.0.1
-pkgrel=1
+pkgrel=2
 pkgdesc="Bash client to update dynamic DNS at freedns.afraid.org"
 arch=('any')
 url="https://github.com/troyengel/petrified"
@@ -11,27 +11,19 @@ options=('emptydirs')
 depends=('util-linux' 'coreutils' 'bash' 'iproute2' 'curl')
 install=petrified.archinst
 backup=('etc/petrified.conf')
-source=('petrified'
-        'petrified.conf'
-        'petrified.crontab'
-        'petrified.dispatch'
-        'petrified.logrotate'
-        'README.md'
-        'LICENSE')
-md5sums=('1bd8884a60ef9d56e1d8bab5febd9618'
-         '3afaa609eaf5089d968167d5298aed31'
-         '96748831c58c8b64e786a9f7386db22e'
-         '01d6dd718325644c3bfbc89030d66a21'
-         '66aff4c7c44404f32315abdab0a479bc'
-         '56ab643013bdea713f0e67a095e77b56'
-         'd32239bcb673463ab874e80d47fae504')
+source=("https://github.com/troyengel/${pkgname}/archive/v${pkgver}.tar.gz")
+md5sums=('51eb41827d256950f0aa76710b23fef0')
 
 package() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+
+  # Install the system bits
   install -Dm0755 petrified "${pkgdir}/usr/bin/petrified"
-  install -Dm0640 petrified.conf "${pkgdir}/etc/petrified.conf" 
+  install -Dm0600 petrified.conf "${pkgdir}/etc/petrified.conf" 
   install -Dm0644 petrified.logrotate "${pkgdir}/etc/logrotate.d/petrified" 
   install -dm0755 "${pkgdir}/var/cache/petrified"
 
+  # Install examples for the user
   install -dm0755 "${pkgdir}/usr/share/doc/${pkgname}"
   install -m0644 petrified.conf petrified.crontab petrified.dispatch \
                  README.md "${pkgdir}/usr/share/doc/${pkgname}"