updated OAuth spec helper: added Bundler.setup to support running specs individually; added configure block to do common mixins

oa-oauth/spec/spec_helper.rb

@@ -1,10 +1,14 @@
 require 'rubygems'
+require 'bundler'
+Bundler.setup
 require 'spec'
 require 'spec/autorun'
-require 'rack/test'
 require 'webmock/rspec'
+require 'rack/test'
+require 'omniauth/core'
+require 'omniauth/oauth'
 
-include Rack::Test::Methods
-include WebMock
-
-require 'omniauth/oauth'
+Spec::Runner.configure do |config|
+  config.include WebMock
+  config.include Rack::Test::Methods
+end