Simple example application

[sanastas]

Add a simple example application that uses Oak. It is really open-ended issue. We would love to see any variation of usage and of course this can be an umbrella to many contributors to participate!

For more explanations feel free to add questions in this issue.

[Eshcar]

Oak aims at helping big data platforms and systems offload their data from the JVM heap. It is mainly required when the space overhead and performance degradation due to GC becomes intolerable. As such it currently supports 2 main APIs: 1) navigable key-value map, and 2) general purpose memory management. We plan to extend the APIs as would be required by applications.

Simple example applications, either toy examples, or real application that you have in mind can help understand how to best use the existing APIs as well as give us hints on how to enrich it. For example, support hash map, cache, doubly linked list, etc.