Updated README.md

Updated README.md to specify which Apache HC libraries to download
Merge branch 'master' of github.com:nVisium/xssValidator
Began developing slimer.js implementation of xss-detector
Slimer.JS xss-detector script functioning identically to phantom.js implementation
Added slimer-js functionality to xssValidator.
Updated readme to reflect slimerjs implementation
Added a few new payloads to xssValidator that trigger onerror and onload.