Add 'ruby-zip'.

This is a dependency for 'cewl'.
diff --git a/packages/cewl/PKGBUILD b/packages/cewl/PKGBUILD
index 1739819..8cf0af5 100644
--- a/packages/cewl/PKGBUILD
+++ b/packages/cewl/PKGBUILD
@@ -1,14 +1,14 @@
 pkgname=cewl
 pkgver=4.3
 pkgrel=2
-groups=(blackarch blackarch-password-attacks)
+groups=('blackarch' 'blackarch-password-attacks')
 pkgdesc='A custom word list generator'
 arch=('any')
 url="http://www.digininja.org/projects/cewl.php"
 license=('CCPL')
-depends=(ruby ruby-spider ruby-mini_exiftool ruby-nokogiri ruby-http_configuration ruby-rubyzip ruby-mime-types)
-install=
-changelog=
+depends=('ruby' 'ruby-spider' 'ruby-mini_exiftool' 'ruby-nokogiri'
+         'ruby-http_configuration' 'ruby-rubyzip' 'ruby-mime-types'
+         'ruby-zip')
 source=("http://www.digininja.org/files/cewl_4.3.tar.bz2"
         "fix-modules-invocation.patch"
         "fix-usage.patch")
@@ -17,17 +17,22 @@ md5sums=('ace5e53a1485016ccc37a52a46ea7ff2'
          'ca224d8ef80283df54a1104e792d903d')

 prepare() {
-  cd "$srcdir/$pkgname"
+  cd "$srcdir/cewl"

   patch -Np1 -i ../fix-modules-invocation.patch
   patch -Np1 -i ../fix-usage.patch
 }

 package() {
-  install -D -m755 ${srcdir}/${pkgname}/cewl.rb ${pkgdir}/usr/bin/cewl.rb
-  install -D -m755 ${srcdir}/${pkgname}/fab.rb ${pkgdir}/usr/bin/fab.rb
-  install -d -m755 ${pkgdir}/usr/share/${pkgname}
-  install -D -m644 ${srcdir}/${pkgname}/README ${pkgdir}/usr/share/${pkgname}/README
-  install -d -m755 ${pkgdir}/usr/lib/ruby/vendor_ruby/${pkgname}
-  install -D -m644 ${srcdir}/${pkgname}/cewl_lib.rb ${pkgdir}/usr/lib/ruby/vendor_ruby/${pkgname}/cewl_lib.rb
+  cd "$srcdir/cewl"
+
+  # Base directories.
+  install -dm755 "$pkgdir/usr/bin"
+  install -dm755 "$pkgdir/usr/share/doc/cewl"
+  install -dm755 "$pkgdir/usr/lib/ruby/vendor_ruby/cewl"
+
+  install -m755 "$srcdir/cewl/cewl.rb" "$pkgdir/usr/bin/cewl"
+  install -m755 "$srcdir/cewl/fab.rb" "$pkgdir/usr/bin/fab"
+  install -m644 "$srcdir/cewl/README" "$pkgdir/usr/share/doc/cewl/README"
+  install -m644 "$srcdir/cewl/cewl_lib.rb" "$pkgdir/usr/lib/ruby/vendor_ruby/cewl/cewl_lib.rb"
 }
cewl: Rewrite mostly everything.