Add cookbooks to Berksfile which are used for chef-rails-dev-box

chef-rails-dev-box is a recipe for preparing rails environment,
which is published by banyan at "https://github.com/banyan/chef-rails-dev-box".
This package is made for vagrant though, I will edit it and customize for SAKURA VPS.
Add a cookbook which prepare necessary packages for rails installation

I add "preinstall-rails" cookbook by which necessary packages as follows are installed,
  curl
  curl-devel
  gcc
  gcc-c++
  make
  zlib-devel
  openssl-devel
  readline-devel
  ncurses-devel
  libxml2-devel
  libxslt-devel
  bzip2-devel
  libjpeg-devel
  libpng-devel
  freetype-devel
  libyaml
  libyaml-devel
  httpd-devel
  tk-devel
  libffi-devel
  bison
  autoconf
  automake
  libtool
Delete a cookbook which shows Hello World

I remove a useless cookbook which I create as a sample.
It just shows "Hello World" as chef log.
Modifed node.json I removed a definition of Hello-Recipe

I remove recipe of "hello" from node.json,
since it is useless and deleted at last commit.