README.md in tee_logger-2.6.0 vs README.md in tee_logger-2.7.0

@@ -55,10 +55,14 @@
 tl.debug 'hello'
 tl.debug(:progname) { 'hello world' }
 tl.progname = 'App'
 tl.debug 'hello tee_logger'
 
+# disable only when specified
+tl.info 'this message is logfile only', :console
+tl.info 'this message is console only', :logfile
+
 # disable console output
 tl.disable(:console)
 tl.info 'this message is logfile only'
 
 # enable console output
@@ -79,33 +83,47 @@
 end
 tl.info 'this message is logfile and console'
 
 # and others like Logger's
 tl.debug? # => true
-tl.info?
-tl.warn?
-tl.error?
-tl.fatal?
+tl.info?  # => true
+tl.warn?  # => true
+tl.error? # => true
+tl.fatal? # => true
 
 tl.level # => 0
 tl.level = Logger::INFO
 tl.debug 'this message is not logging'
 
 tl.formatter # => nil or Proc
-tl.formatter = proc {|severity, datetime, progname, message| "#{severity}:#{message}" }
+tl.formatter = proc { |severity, datetime, progname, message| "#{severity}:#{message}" }
+
+tl.datetime_format # => nil or Proc
+tl.datetime_format = '%Y%m%d %H%M%S '
 ```
 
 
 ## Development
 
-After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake rspec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+After checking out the repo, run `bundle install` to install dependencies.
+Then, run `rake rspec` to run the tests.
+You can also run `budle exec pry -r ./lib/tee_logger` for an interactive prompt
+that will allow you to experiment.
 
-To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+To install this gem onto your local machine, run `bundle exec rake install`.
+To release a new version, update the version number in `version.rb`,
+and then run `bundle exec rake release`,
+which will create a git tag for the version,
+push git commits and tags,
+and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/k-ta-yamada/tee_logger. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](contributor-covenant.org) code of conduct.
+Bug reports and pull requests are welcome on GitHub at https://github.com/k-ta-yamada/tee_logger.
+This project is intended to be a safe,
+welcoming space for collaboration,
+and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
 
 
 ## License
 
 The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).