Added configure method to Capybara module

lib/capybara.rb

@@ -24,6 +24,10 @@ module Capybara
     def default_wait_time
       @default_wait_time ||= 2
     end
+
+    def configure
+      yield self
+    end
   end
 
   autoload :Server,     'capybara/server'

spec/spec_helper.rb

@@ -14,6 +14,8 @@ Capybara.default_wait_time = 0 # less timeout so tests run faster
 
 Spec::Runner.configure do |config|
   config.before do
-    Capybara.default_selector = :xpath
+    Capybara.configure do |config|
+      config.default_selector = :xpath
+    end
   end
 end