Add development dependencies.

Author: fnando

browser.gemspec

@@ -24,10 +24,13 @@ Gem::Specification.new do |s|
                     .map {|f| File.basename(f) }
   s.require_paths = ["lib"]
 
+  s.add_development_dependency "bigdecimal"
   s.add_development_dependency "bundler"
+  s.add_development_dependency "logger"
   s.add_development_dependency "minitest"
   s.add_development_dependency "minitest-autotest"
   s.add_development_dependency "minitest-utils"
+  s.add_development_dependency "mutex_m"
   s.add_development_dependency "rack-test"
   s.add_development_dependency "rails"
   s.add_development_dependency "rake"

test/test_helper.rb

@@ -7,6 +7,7 @@
 
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
 require "bundler/setup"
+require "logger"
 require "minitest/autorun"
 require "minitest/utils"
 require "browser"