* app.js: fixed response status for few methods
* added package.json
* added /static/qvscripts/qvfsa_unzip.txt --> script to handle unzip request from qlikview
* added /static/qvscripts/qvfsa_zipfile.txt --> script to handle zip file request from qlikview
* added /static/qvscripts/qvfsa_zipfolder.txt --> script to handle zip folder request from qlikview
* QVFSA_Example.qvw: added script examples for zipfile, zipfodler and unzip