Added .vertx to .gitignore

Signed-off-by: Julien Viet <julien@julienviet.com>
Change connect stream pause/resume to close connection directly instead of setting Netty autoread to false

Signed-off-by: Julien Viet <julien@julienviet.com>
# This is a combination of 2 commits.
# The first commit's message is:

Some Java8-ification, cleanup, but mainly thread-safety work - making sure that appropriate objects can be used safely from different threads - this is important for the case of being embedded without verticles

# The 2nd commit message will be skipped:

#	Make sure Vert.x objects can be used safely from different threads, where appropriate