Merge pull request #104 from asm256/fix-for-ci

fix badge and ci.

.travis.yml

@@ -4,4 +4,8 @@ rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.0
-  - rbx
+  - 2.2.2
+  - ruby-head
+before_install:
+  - "gem update --system"
+  - "gem update bundler"

pry-rescue.gemspec

@@ -18,7 +18,25 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
-  s.add_development_dependency 'yard'
   s.add_development_dependency 'redcarpet'
   s.add_development_dependency 'capybara'
+
+  # SPECIAL DEVELOPMENT GEM FOR OLD RUBY
+  # DONT USE THIS TRICK FOR RUNTIME GEM
+  if Gem::Version.create(RUBY_VERSION) < Gem::Version.create("2.2.2")
+    s.add_development_dependency 'yard', '< 0.9.6'
+    s.add_development_dependency 'rack', ['~> 1.6', '< 1.7']
+  else
+    s.add_development_dependency 'yard'
+  end
+  if Gem::Version.create(RUBY_VERSION) < Gem::Version.create("2.1")
+    # capybara > nokogiri
+    s.add_development_dependency 'nokogiri', ['~> 1.6', '< 1.7.0']
+  end
+  if Gem::Version.create(RUBY_VERSION) < Gem::Version.create("2.0")
+    # capybara > addressable > public_suffix
+    s.add_development_dependency 'public_suffix', ['~> 1.4', '< 1.5']
+    # capybara > mime-types
+    s.add_development_dependency 'mime-types', ['~> 2.6', '< 2.99']
+  end
 end