another big commit :D

Gemfile

@@ -10,7 +10,10 @@ gem 'jquery-rails'
 gem 'therubyracer'
 gem 'bcrypt-ruby', '~> 3.0.0' # To use ActiveModel has_secure_password
 gem 'simple_form'
-gem 'rbbcode'
+gem 'sanitize'
+gem 'github-markdown'
+gem 'hirb' #pretty console output
+gem 'rb-readline'
 
 # Gems used only for assets and not required
 # in production environments by default.
@@ -25,6 +28,7 @@ group :assets do
 end
 
 group :development do
+  gem 'webrick'
   gem 'better_errors'
   gem 'binding_of_caller'
 end