docs(readme): adds info about commitizen
docs(readme): adds info about commitizen

Closes #49
clog-tool/clog-lib,badboy/clog-lib,semantic-rs/clog-lib,thoughtram/clog,semantic-rs/clog-lib,Vinatorul/clog-cli,kentcdodds/clog,Vinatorul/clog-lib,kentcdodds/clog,clog-tool/clog-cli,clog-tool/clog-cli,badboy/clog-lib,Vinatorul/clog-lib