Merge pull request #18 from philelauria/master

deleted parserFileName. updated conflicts in parserFile
Added event listener and implemented items list parsing and async returns collection from Walmart API.
Merge pull request #19 from davemun/master

Added event listener and implemented items list parsing and async return...
Enhanced UI
Merge pull request #20 from essamjoubori/master

Enhanced UI
Updated parser file to create functionality for Walmart API parsing.
updated partial items.html and index.js