Bundler update

Author: zealot128

ba_upload.gemspec

@@ -20,6 +20,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "mechanize"
-  spec.add_development_dependency "bundler", "~> 1.11"
+  spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 10.0"
 end