Add tpp package

packages/tpp.rb

+require 'package'
+
+class Tpp < Package
+  description 'tpp stands for text presentation program and is an ncurses-based presentation tool.'
+  homepage 'http://www.ngolde.de/tpp.html'
+  version '1.3.1'
+  source_url 'http://www.ngolde.de/download/tpp-1.3.1.tar.gz'
+  source_sha256 '68e3de94fbfb62bd91a6d635581bcf8671a306fffe615d00294d388ad91e1b5f'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'ncurses'
+
+  def self.build
+    installed=`gem list | grep ^ncurses-ruby`
+    system "gem install ncurses-ruby" unless "#{installed}" != ""
+    system "sed -i 's,prefix=/usr/local,prefix=#{CREW_DEST_PREFIX},' Makefile"
+  end
+
+  def self.install
+    system "mkdir -p #{CREW_DEST_PREFIX}/bin"
+    system "mkdir -p #{CREW_DEST_PREFIX}/share/man/man1"
+    system "make install"
+    system "gzip -9 #{CREW_DEST_PREFIX}/share/man/man1/tpp.1"
+  end
+end