[DO NOT MERGE] Add Lwt examples for each of the six scalability protocols#21

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darioteixeira wants to merge 2 commits intorgrinberg:masterfrom darioteixeira:lwt-examples

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Commits on Jul 20, 2016

Add Lwt examples for each of the six scalability protocols
darioteixeira
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Commits on Jul 21, 2016

Add multiple PULL nodes to pipeline example (it better demonstrates load-balancing)
darioteixeira
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