Add nodebrew 0.9.7

packages/nodebrew.rb

+require 'package'
+
+class Nodebrew < Package
+  description 'Node.js version manager'
+  homepage 'https://github.com/hokaccha/nodebrew'
+  version 'v0.9.7'
+  source_url 'https://github.com/hokaccha/nodebrew/archive/v0.9.7.tar.gz'
+  source_sha256 '3aa8b0cf30024d105f1ac6921aadf0440bc95bcae43df9d6ec58fc9de8cd352e'
+
+  depends_on 'perl'
+
+  def self.install
+    system "mkdir -p #{CREW_DEST_DIR}#{CREW_LIB_PREFIX}/nodebrew"
+    system "NODEBREW_ROOT=#{CREW_DEST_DIR}#{CREW_LIB_PREFIX}/nodebrew perl nodebrew setup > /dev/null"
+
+    system "mkdir -p #{CREW_DEST_DIR}#{CREW_PREFIX}/bin"
+    system "ln -s #{CREW_LIB_PREFIX}/nodebrew/nodebrew #{CREW_DEST_DIR}#{CREW_PREFIX}/bin/"
+    system "ln -s #{CREW_LIB_PREFIX}/nodebrew/current/bin/node #{CREW_DEST_DIR}#{CREW_PREFIX}/bin/"
+
+    system "ln -s #{CREW_LIB_PREFIX}/nodebrew $HOME/.nodebrew"
+
+    puts ""
+    puts "Please set PATH environment variable."
+    puts "\texport PATH=$HOME/.nodebrew:$PATH"
+    puts ""
+    puts "To install the latest node, please execute:"
+    puts "\tnodebrew install-binary latest"
+    puts "\tnodebrew use latest"
+    puts ""
+  end
+end