Update README.md

better example
add branch property to payload and add branch method to match it
update README.md
update changelog
Bump version v0.0.5
Merge branch 'develop'

Conflicts:
	README.md
	lib/gwooks/base.rb
	spec/gwooks/base_spec.rb
bump new version v0.0.6

  - Add possibility to nest matcher methods
  - General cleanup
Improve README.md
Improve README.md
add test for nested matchers