Bump bundler version

Author: wagenet

examples/duration/duration.gemspec

@@ -26,7 +26,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_runtime_dependency "helix_runtime"
-  spec.add_development_dependency "bundler", "~> 1.11"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "minitest", "~> 5.0"
 end

examples/turbo_blank/turbo_blank.gemspec

@@ -27,7 +27,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_runtime_dependency "helix_runtime"
-  spec.add_development_dependency "bundler", "~> 1.11"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "minitest", "~> 5.0"
 end

ruby/helix_runtime.gemspec

@@ -28,7 +28,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "thor",   [">= 0.19.4", "< 2.0"]
   spec.add_dependency "tomlrb", "~> 1.2.4"
 
-  spec.add_development_dependency "bundler", "~> 1.10"
+  spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rspec", "~> 3.4"
   spec.add_development_dependency "rake-compiler", "~> 0.9.7"
 end