Create a Sinatra page of blog posts that are in separate markdown files

md_sinatra.rb

# Create an array of all markdown files from a specific directory
# And convert them to Html using the RDiscount gem
# Display them in the index of the page using Haml
#
# I sorted them this way because they are in the format:
#   post_1.md
#   post_2.md
#   ...
#   post_10.md
#   post_11.md
#
# Without the sort done this way, it will put them into the array
# and on your page as:
#
#    post_1.md
#    post_10.md
#    post_11.md
#    post_2.md
#    ...
get '/' do
  @posts = ""
  Dir["/Blog/Markdown/*.md"].sort_by {|f| f.split("_")[1].to_i}.each do |post|
    @posts << RDiscount.new( File.open(post).read ).to_html
  end
  haml :index
end