Fix rx-netty/examples build.
Move examples from rx-netty/src/examples to own top level project.
Given the need to write some unit tests for the examples, this will
make the build setup more explicite (versus now being custom
configuration of rx-netty project).
Refactor/add new HTTP examples.
Update UDP example.
Update TCP examples.
Rename examples module to rx-netty-examples.
Examples README file.
Set correct example URLs in rx-netty-examples/README.md.
Cleanup/simplify rx-netty-examples according to the code review comments.
Add additional HTTP examples (simple POST and chunked content handling).
One more examples cleanup.
Add examples run tasks to rx-netty-examples/build.gradle script.
Fixes issue #139

Making HttpServerResponse.close() idempotent and reducing two flushes to one for most RequestHandlers.
Create README.md document for HelloWorld example and explain basic concepts.
Add README.md to each example with short explanation of what it demonstrates.
rx-netty-examples README.md files cleanup.
Get rid of JDK7 specific methods.
Merge pull request #142 from tbak/master

rx-netty-examples refactoring/update