README.md in maltese-0.8.15 vs README.md in maltese-0.9.0

@@ -6,11 +6,11 @@
 
 Ruby gem and command-line tool for generating sitemap files from the DataCite REST API. Uses the [SitemapGenerator](https://github.com/kjvarga/sitemap_generator) gem and can be run as Docker container, e.g. using as a scheduled task in AWS ECS triggered by AWS Cloudwatch Events.
 
 Run as a command-line tool:
 
-```
+```ruby
 maltese sitemap
 ```
 
 ## Installation
 
@@ -31,11 +31,11 @@
 
 ## Development
 
 We use rspec for unit testing:
 
-```
+```ruby
 bundle exec rspec
 ```
 
 Follow along via [Github Issues](https://github.com/datacite/toccatore/issues).
 
@@ -46,6 +46,7 @@
 * Implement your feature or make a bug fix
 * Do not mess with Rakefile, version or history
 * Commit, push and make a pull request. Bonus points for topical branches.
 
 ## License
+
 **maltese** is released under the [MIT License](https://github.com/datacite/maltese/blob/master/LICENSE.md).