Update constructor error message.
Update to remove dup code after adding FreeMemMgr
Update from Mark's CR
Merge branch 'master' of https://github.com/ropatel/cache

* 'master' of https://github.com/ropatel/cache:
  Clean up duplicate code in ByteArrayManager after adding the FreeMemoryManager

Conflicts:
	LRUCache/src/com/rohinp/mentoring/cache/ByteArrayManager.java