Merge pull request #1 from dbthorpe/master

Added comment to webpages
Added comments to TermIndex class for pull-test.
HashTable methods, Iterator, and part of PA4 class updated. New Queue
class and HashNode class for iterator. Updated WebPages constructor.
Header comments on various classes updates.
Decrement count after deletion from the hash table.
Merge pull request #1 from melindar/master

update