Accept YML as config syntax
Allow to override only options for branch specific
Convert the documentation from JSON to YML
Change the init command to use yaml by default and adapt test
Merge pull request #42 from jeanmonod/yaml-config

Accept YML as config syntax
Merge pull request #41 from jeanmonod/option-merge

Allow to override only a single option for branch specific and not the full entry
Release of new version 0.9.10