Added links for specific optimizations.

Possible fix for #30. Included 5 optimizations from the wiki compiler optimizations. Also, provided a link to branch misprediction and memory hierarchy as a way to nudge them toward eschewing jumps and memory accesses.
Merge pull request #54 from mrecachinas/patch-2

Added links for specific optimizations.
Updating lab09 after pull request #54
Merge branch 'master' into spring2015