New formula: scrypt

A better alternative for bcrypt.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/scrypt.rb

@@ -0,0 +1,12 @@
+require 'formula'
+
+class Scrypt <Formula
+  url 'http://www.tarsnap.com/scrypt/scrypt-1.1.6.tgz'
+  homepage 'http://www.tarsnap.com/scrypt.html'
+  md5 'a35523cd497f7283635ce881db39c2e2'
+
+  def install
+    system "./configure", "--prefix=#{prefix}"
+    system "make install"
+  end
+end