Move assest from vendor to app (Rails 4 compatibility). Thanks to @fomichov.

Author: demiazz

vendor/assets/images/loading.gif app/assets/images/loading.gif

@@ -13,12 +13,12 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project = "jquery-fileupload-rails"
 
-  s.files = Dir["lib/**/*"] + Dir["vendor/**/*"] + ["Rakefile", "README.md"] 
+  s.files = Dir["lib/**/*"] + Dir["app/**/*"] + ["Rakefile", "README.md"]
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
   s.add_dependency             'railties',   '>= 3.1'
   s.add_dependency             'actionpack', '>= 3.1'
-  s.add_development_dependency 'rails', '>= 3.1' 
+  s.add_development_dependency 'rails', '>= 3.1'
 end