Fixed server_static_assets deprecation warning

config/environments/preview.rb

@@ -20,7 +20,7 @@ BikeBike::Application.configure do
 	# config.action_dispatch.rack_cache = true
 
 	# Disable Rails's static asset server (Apache or nginx will already do this).
-	config.serve_static_assets = true
+	config.serve_static_files = true
 
 	# Compress JavaScripts and CSS.
 	config.assets.js_compressor = :uglifier

config/environments/production.rb

@@ -20,7 +20,7 @@ BikeBike::Application.configure do
 	# config.action_dispatch.rack_cache = true
 
 	# Disable Rails's static asset server (Apache or nginx will already do this).
-	config.serve_static_assets = true
+	config.serve_static_files = true
 
 	# Compress JavaScripts and CSS.
 	config.assets.js_compressor = :uglifier