Fix up importing assets

Gemfile

@@ -10,10 +10,6 @@ gem 'sqlite3'
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
-# Use CoffeeScript for .coffee assets and views
-gem 'coffee-rails', '~> 4.1.0'
-# See https://github.com/rails/execjs#readme for more supported runtimes
-# gem 'therubyracer', platforms: :ruby
 
 gem "font-awesome-rails"
 
@@ -31,12 +27,8 @@ gem 'sdoc', '~> 0.4.0', group: :doc
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
 
-# Use Unicorn as the app server
-# gem 'unicorn'
-
-# Use Capistrano for deployment
-# gem 'capistrano-rails', group: :development
-gem 'thin'
+# Use Puma as the app server
+gem 'puma'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console