implemented add, next, prev, keyExists, and find. keyExists gets caught in an infinite loop on first test while seeing if key 0 exists.
implement all method except remove. Remove is partially written, however the algorithm to find a replacement is very tricky, and needs to be carefully thought through
fixed size and remove. also made next and prev recursive.
answered questions
did the exercises
Update README.md

formatted psuedo-code
Merge pull request #5 from continnd/continnd

Finished Lab