Updated tests.
Updated tests.

Mongoose must have changed what gets passed into the callback on doc.save. My tests were expecting an array but were now suddenly getting only the doc object that was saved, which makes more sense anyway :)

DavidBLynch/mongoose-auto-increment,joseym/mongoose-auto-increment,Dashride/mongoose-auto-increment,pongib/mongoose-auto-increment,inetfuture/mongoose-auto-increment,sharelatex/mongoose-auto-increment,iliakan/mongoose-auto-increment,masahirompp/mongoose-auto-increment,pandeysoni/mongoose-auto-increment,codetunnel/mongoose-auto-increment,leonardo-freitas-1995/mongoose-auto-increment,iToreTS/mongoose-auto-increment,kolomiichenko/mongoose-auto-increment,fengzhu/mongoose-auto-increment,tes/mongoose-auto-increment