Configure RSpec explicitely
Merge branch 'master' into configure-rspec-explicitely

Conflicts:
	spec/spec_helper.rb
Merge branch 'master' into configure-rspec-explicitely
Change behavior to call backend.set_example only if respont_to? :backend and :set_example to avoid occuring error when they are not defined
Merge pull request #8 from serverspec/configure-rspec-explicitely

Configure RSpec explicitely