Update assets path for webpacker

Author: seanmarcia

config/initializers/assets.rb

@@ -3,6 +3,8 @@
 # Version of your assets, change this if you want to expire all your assets.
 Rails.application.config.assets.version = '1.0'
 
+Rails.application.config.assets.paths << Rails.root.join('node_modules')
+
 # Add Modernizr
 Rails.application.config.assets.precompile += %w( vendor/modernizr.js )