updated package.json to use never version of request, as request-1.9.8 globally leaked 'i'
updated package.json to use never version of request, as request-1.9.8 globally leaked 'i'

Fixes #19

droppedoncaprica/node-airbrake,airbrake/node-airbrake,miguelmota/node-airbrake,protonet/node-airbrake,sinsoku/node-airbrake,felixge/node-airbrake