* code snippets for the `Java 9 Stream API improvements` article
* code snippets for the `Java 9 Stream API improvements` article [2 attempt]
* removed the first attempt
* the Spring 5 WebClient
* delted stream features test
* HttpMediaTypeNotAcceptableExceptionExampleController [0]
* reactive web client service was removed
* new WebClient
* new WebClient [2]
* spring-rest-shell init
* pom added
* readme added
Andrew