Merge pull request #16 from NiteshKant/master

Netty blocking impl
Upgrade to RxJava 0.14.7 - this include Apache HttpAsyncClient 4.0GA which should fix the deadlock issue previously experienced
New version from Raju
Removing duplicate results folker
Few enhancements/bug-fixes:

1) Revamped the client to not switch the executor unless connect failed or retry. Earlier it was switching for every connect & response listener invocation.
2) Carrying forward the promise initially given to the caller of HttpClient even in retries. This may have caused incompleted requests.
Merge https://github.com/benjchristensen/WSPerfLab