Merge pull request #26 from DemandCube/dev/kingofpoptart

fixing unit tests. Possible memory leak in netty code
Merge pull request #27 from DemandCube/dev/kingofpoptart

Possible memory leak in test
update cluster builder and tuning the performance test
Merge branch 'master' of github.com:DemandCube/Sparkngin
refractor sparkngin to allow multiple protocol adapter later , fix the pixel route handler
move the old vertx and jetty code to sample
Removing old pixel code