Do not cache old doc results
Merge branch 'master' of github.com:gooddata/gooddata-ruby

Conflicts:
	.yardopts
	lib/gooddata/version.rb
Added coveralls.io badge
Merge branch 'master' of github.com:gooddata/gooddata-ruby
Merge branch 'master' of github.com:korczis/gooddata-ruby

Conflicts:
	README.md
Merge branch 'master' into refactor