Fixed initialCapacity constructor.
Added ArrayMap.
Minor edits.
Merge pull request #45 from mfrancis95/mike

ArrayMap and minor edits and fixes.
Merge pull request #46 from mfrancis95/ross

Big Boo
Merge branch 'master' into ross
Merge branch 'ross' of https://github.com/mfrancis95/Data-Structures into ross