Loosen Capybara restriction and test with 2.15

.travis.yml

@@ -28,7 +28,7 @@ matrix:
       gemfile: gemfiles/2.7.gemfile
       env: QMAKE=/usr/lib/x86_64-linux-gnu/qt4/bin/qmake
     - rvm: 1.9.3
-      gemfile: gemfiles/2.13.gemfile
+      gemfile: gemfiles/2.15.gemfile
       env: QMAKE=/usr/lib/x86_64-linux-gnu/qt4/bin/qmake
     - rvm: 2.3.3
       gemfile: gemfiles/master.gemfile
@@ -36,7 +36,7 @@ matrix:
     - gemfile: gemfiles/master.gemfile
 gemfile:
   - gemfiles/2.7.gemfile
-  - gemfiles/2.13.gemfile
+  - gemfiles/2.15.gemfile
 before_install:
   - gem install bundler
 install: bundle

capybara-webkit.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
 
   s.requirements << "Qt >= 4.8"
 
-  s.add_runtime_dependency("capybara", ">= 2.3.0", "< 2.15.0")
+  s.add_runtime_dependency("capybara", "~>2.3")
   s.add_runtime_dependency("json")
 
   s.add_development_dependency("rspec", "~> 3.5")

gemfiles/2.15.gemfile

@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 gem "mime-types", "< 3.0", :platforms=>[:ruby_19, :jruby_19]
 gem "json", "< 2.0", :platforms=>[:ruby_19, :jruby_19]
-gem "capybara", "~> 2.13.0"
+gem "capybara", "~> 2.15.0"
 gem "addressable", "< 2.5.0", :platforms=>[:ruby_19, :jruby_19]
 gem "nokogiri", "< 1.7.0", :platforms=>[:ruby_19, :jruby_19]