Merge pull request #616 from yatindra/master

Fix #615  Errror: Could not find or load main class 2.0.0-beta2
[#610] Give access to NetSocket on the HttpClientResponse
Fix test
https://github.com/vert-x/vert.x/issues/617
Merge branch 'master' of github.com:vert-x/vert.x
wait for close to complete before verticles are undeployed
a few fixes to improve things when running tests on CI
make sure data is written before closing socket
fixed blocking on commands and bintray stuff
fixed test
[#621] Fix java.lang.UnsupportedOperationException in DefaultAsyncFile
Not restrict the name / value in CaseInsentiveMultiMap
Cleanup
@Deprecated HeaderUtils as we not use it anymore
Reformat to match style
More cleanup which includes removing unused imports etc
Make private methods static when possible. Same for private inner classes
@Deprecated LowerKaseKeyMap as not used anymore
Remove unused imports / use final when possible
More cleanup