Completed project 2 to the best of my abilities.#13

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drerucha wants to merge 3 commits intoCIS565-Fall-2014:masterfrom

drerucha:master

Commits on Sep 28, 2014

Implement serial exclusive prefix sum.
drerucha
committed

Commits on Sep 29, 2014

Add naive scans using both global and shared memory. Add scatter and full stream compaction operations.
drerucha
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Add rudimentary performance analysis to README.
drerucha
committed