Added endpoint for building Rails guides from HTTP hook

Gemfile

@@ -2,3 +2,9 @@ source 'http://rubygems.org'
 
 gem 'rake'
 gem 'sinatra'
+
+group :guides do
+  gem 'RedCloth'
+  gem 'i18n'
+  gem 'erubis'
+end

application.rb

@@ -12,6 +12,17 @@ class Application < Sinatra::Base
       username == Config::USERNAME && password == Config::PASSWORD
     end
 
+    post '/build' do
+      cmd = []
+      cmd << "cd #{Config::GUIDES}"
+      cmd << "rm -rf output/cz"
+      cmd << "git fetch origin"
+      cmd << "git reset origin/czech --hard"
+      cmd << "rake generate_guides ONLY=getting_started LANG=cz"
+      puts "Running command: " + cmd.join(' && ')
+      system cmd.join(' && ')
+    end
+
   end
 end