chore(package): update chai to version 3.4.0
chore(package): update chai to version 3.4.0

http://greenkeeper.io/
wjbryant/mustache.js,phillipj/mustache.js,phillipj/mustache.js,srrvnn/mustache.js,aaron-goshine/mustache.js,ivantcholakov/mustache.js,janl/mustache.js,phillipj/mustache.js,janl/mustache.js,srrvnn/mustache.js,ivantcholakov/mustache.js,phillipj/mustache.js,ivantcholakov/mustache.js,ivantcholakov/mustache.js,aaron-goshine/mustache.js,srrvnn/mustache.js,janl/mustache.js,aaron-goshine/mustache.js,phillipj/mustache.js,janl/mustache.js,janl/mustache.js,wjbryant/mustache.js,wjbryant/mustache.js,srrvnn/mustache.js,aaron-goshine/mustache.js,wjbryant/mustache.js