akka-http based simple Java http client.

Simple akka-http client level examples:

• hostLevel
• connectionLevel
• requestLevel

Simple endpoint of GoEuro is used

• the response json is written to a csv file.

• settings are read from application.conf

• jar can be created with:

  sbt assembly

• jar can be called with:

  java -jar target/scala-2.11/GoEuroTest.jar Berlin