updated gitignore and added aocinit

.gitignore

@@ -56,3 +56,4 @@ build-iPhoneSimulator/
 # Used by RuboCop. Remote config files pulled in from inherit_from directive.
 # .rubocop-https?--*
 
+cookie.txt

aocinit.rb

@@ -0,0 +1,30 @@
+#!/bin/env ruby
+require 'optparse'
+require 'httparty'
+
+options = {}
+OptionParser.new do |opts|
+  opts.banner = 'aocinit.rb --help'
+  opts.on('-y', '--year year', 'AoC year') do |year|
+    options[:year] = year
+  end
+  opts.on('-d', '--day day', 'AoC day') do |day|
+    options[:day] = day
+  end
+  opts.on('-c', '--cookie-file cookie', 'File containing your AoC cookie') do |cookie|
+    options[:cookie] = cookie
+  end
+end.parse!
+
+url = "https://adventofcode.com/#{options[:year]}/day/#{options[:day]}/input"
+options[:day] = '0' + options[:day] if options[:day].to_i < 10
+newdir = "./day#{options[:day]}"
+cookie = File.read("./#{options[:cookie]}")
+@options = { headers: { 'Cookie' => "session=#{cookie}" } }
+input = HTTParty.get(url, @options)
+
+abort 'Day already initiated.' if Dir.exist?(newdir)
+Dir.mkdir(newdir)
+Dir.chdir(newdir)
+File.write('./input', input)
+File.write('./solution.rb', '#!/bin/env ruby')