#13 - implemented structured response renderer and two first basic implementations for plain string and json format
#13 - added tests
Merge branch 'master' into structured-responses2

Conflicts:
	reactor-bootstrap/src/main/java/org/reactor/transport/DefaultReactorRequestHandler.java
#13 -  using renderer instead of writer
Merge pull request #22 from activey/structured-responses

Structured responses