going to start using image_optim in prd for image sizing

Gemfile

@@ -20,6 +20,9 @@ gem 'fog', require: false
 gem 'has_ip_address'
 gem 'hiredis'
 gem 'i18n-js'
+# note: for image_optim to correctly work you need
+# sudo apt-get install -y advancecomp gifsicle jpegoptim libjpeg-progs optipng pngcrush
+gem 'image_optim'
 gem 'jquery-rails'
 gem 'multi_json'
 gem 'mustache'
@@ -79,7 +82,6 @@ group :test, :development do
   gem 'guard-jasmine'
   gem 'guard-rspec' 
   gem 'guard-spork'
-  gem 'image_optim'
   gem 'jasminerice'
   gem 'mocha', require: false
   gem 'rb-fsevent'