mv README README.rdoc as app template file
remove yaml as a param parser :burn:

If you revert this commit, I will hunt you down, I will make you regret
ever terrible thing you've ever done, I will make you suffer.
Add CHANGELOG entry for YAML parsing removal

This is for commit e80546cdec56a9c3fcaf6217cba08a02d789d2bc.
Merge pull request #8827 from sikachu/master-remove-yaml-changelog

Add CHANGELOG entry for YAML parsing removal
Fix syntax error and remove duplicated test