anchor.diff:  
   ==== Strict Transport Security
   
  -This is a security related chain handler that adds the `Strict-Transport-Security` to the response.
  +This is a security related chain handler that adds the `Strict-Transport-Security` header to the response.
   
   HTTP Strict Transport Security (often abbreviated as HSTS) is a security feature that lets a web
   site tell browsers that it should only be communicated with using HTTPS, instead of using HTTP.
  
positive.code: | `:threads` | (num of cores * 2) | The number of threads for handler requests.
  | `:debug` | `true` | Start in development mode.
  | `:setup` | nil    | A callback for configuration step (low level ratpack access).
  | `:basedir` | nil | The application base directory, used mainly for resolve relative paths and assets.
  |===========================================================================
  
  All supported options of this function, can be overwritten on jvm startup, using environment variables
  or system properties. This allows customize the server out of source code and exists for convenience
  for make easy customizations in deployments.
  
  For example, you can change the default port on jvm startup using `CATACUMBA_PORT` environment variable
  or `catacumba.port` system property:
  
  .Example using enviroment variables
  
negative.code: git clone https://github.com/funcool/catacumba
  ----
  
  === Run tests
  
  For running tests just execute this:
  
  [source, text]
  ----
  