Fix deprecation warnings with RSpec 2.14
Accept empty responses
Merge pull request #158 from alfonsocora/accept_empty_responses

Add option to accept empty responses
Merge pull request #156 from yozlet/fix_rspec_deprecations

Fix deprecation warnings with RSpec 2.14
Added #save! for more Rails-ness (and users like FactoryGirl)

Also added Her::Errors::ResourceInvalid (like ActiveRecord's RecordInvalid)
A light sprinkling of hints in the documentation
Merge pull request #160 from yozlet/save-bang

Added #save! for more Rails-ness (and gems like FactoryGirl)
Association should respond to #empty? for compatibility with ActiveSupport's #blank? method
Merge pull request #161 from ninech/fix-compatibility-with-blank

Association should respond to #empty? for compatibility with ActiveSupport's #blank? method