Update debug dependency to 2.2.0
Update debug dependency to 2.2.0

debug@2.0.0 has a vulnerability in its dependency on ms@0.6.2.

debug@2.2.0 has updated its ms dependency to a version without this vulnerability.
tswaters/mocha,sul4bh/mocha,mochajs/mocha,aaroncrows/mocha,hashcube/mocha,ryanshawty/mocha,tswaters/mocha,aaroncrows/mocha,beatfactor/mocha,adamgruber/mocha,igwejk/mocha,tinganho/mocha,Shyp/mocha,nightwatchjs/mocha-nightwatch,tswaters/mocha,ryanshawty/mocha,boneskull/mocha,mochajs/mocha,Khan/mocha,nightwatchjs/mocha-nightwatch,apkiernan/mocha,rlugojr/mocha,Hacker0x01/mocha,apkiernan/mocha,jjoos/mocha,tinganho/mocha,hashcube/mocha,apkiernan/mocha,villesau/mocha,mochajs/mocha,outsideris/mocha,Khan/mocha,adamgruber/mocha,beatfactor/mocha,igwejk/mocha,netei/mocha,gaye/mocha,pumpupapp/mocha,jjoos/mocha,menelaos/mocha-solarized,ryanshawty/mocha,Hacker0x01/mocha,hoverduck/mocha,villesau/mocha,gaye/mocha,netei/mocha,boneskull/mocha,JohnnyEstilles/mocha,pumpupapp/mocha,menelaos/mocha-solarized,rlugojr/mocha,Shyp/mocha,jjoos/mocha,hoverduck/mocha,ELLIOTTCABLE/mocha,villesau/mocha,Hacker0x01/mocha,JohnnyEstilles/mocha,sul4bh/mocha,rlugojr/mocha,Khan/mocha,pumpupapp/mocha,hashcube/mocha,hoverduck/mocha,santiagoaguiar/mocha,hoverduck/mocha,outsideris/mocha,Shyp/mocha,ELLIOTTCABLE/mocha,santiagoaguiar/mocha,boneskull/mocha,tinganho/mocha,netei/mocha,santiagoaguiar/mocha,beatfactor/mocha,gaye/mocha,menelaos/mocha-solarized,ELLIOTTCABLE/mocha,JohnnyEstilles/mocha,sul4bh/mocha,adamgruber/mocha,aaroncrows/mocha,nightwatchjs/mocha-nightwatch