fix: package.json to reduce vulnerabilities
fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-MORGAN-72579
- https://snyk.io/vuln/npm:cookie-signature:20160804
- https://snyk.io/vuln/npm:express:20140912
- https://snyk.io/vuln/npm:fresh:20170908
- https://snyk.io/vuln/npm:mime:20170907
- https://snyk.io/vuln/npm:negotiator:20160616
- https://snyk.io/vuln/npm:qs:20140806
- https://snyk.io/vuln/npm:qs:20140806-1
- https://snyk.io/vuln/npm:qs:20170213
- https://snyk.io/vuln/npm:send:20140912
- https://snyk.io/vuln/npm:send:20151103
- https://snyk.io/vuln/npm:serve-index:20150314
- https://snyk.io/vuln/npm:serve-static:20150113
bmordue/readitinfulljs