Add package for The Silver Searcher. A faster way to search your filesystem

packages/the_silver_searcher.rb

+require 'package'
+
+class The_silver_searcher < Package
+  description 'Code-search similar to ack. (ag)'
+  homepage 'https://github.com/ggreer/the_silver_searcher'
+  version '2.0.0'
+  source_url 'https://github.com/ggreer/the_silver_searcher/archive/2.0.0.tar.gz'
+  source_sha256 'ff7243863f22ed73eeab6f7a6d17cfff585a7eaa41d5ab3ae4f5d6db97701d5f'
+
+  depends_on "autoconf"
+  depends_on "automake"
+  depends_on "pkgconfig"
+  depends_on "pcre"
+  depends_on "xzutils"
+
+  def self.build
+    system "autoreconf", "-fiv"
+    system "./configure"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install" # the steps required to install the package
+  end
+
+end