fix(mongoose): fixing mongoose deprecation notice for promises lib (#1691)
fix(mongoose): fixing mongoose deprecation notice for promises lib (#1691)

If no promises library set correctly for the mongoose.Promise property then the following warning notice is omitted by mongoose:
`DeprecationWarning: Mongoose: mpromise (mongoose's default promise library) is deprecated, plug in your own promise library instead: http://mongoosejs.com/docs/promises.html`
taobataoma/imean,renethio/afelalagi,simison/mean,lirantal/meanjs,taobataoma/imean,Hkurtis/capstone,trendzetter/VegetableGardenPlanner,vaucouleur/mean,CSALucasNascimento/Personal-APP,jloveland/mean,taobataoma/imean,gaelgf/twitter-mongo,simison/mean,Sunderous/lupine,codydaig/mean,CSALucasNascimento/Personal-APP,p4cm4n972/galajsy.proto,Sunderous/lupine,combefis/OpenSM,zhaokejian/SenImgVis-meanjs,READYTOMASSACRE/example-calendar-mean,rastemoh/mean,aivrit/Prioreatize,gaelgf/twitter-mongo,tmullen71/automata,Mulumoodi/smartCams,codydaig/mean,meanjs/mean,vaucouleur/mean,zhaokejian/SenImgVis-meanjs,meanjs/mean,jloveland/mean,READYTOMASSACRE/example-calendar-mean,osbornch/image-stock,rastemoh/mean,Hkurtis/capstone,trendzetter/VegetableGardenPlanner,tmullen71/automata,tonymullen/flipflop,CSALucasNascimento/Personal-APP,codydaig/mean,zhaokejian/SenImgVis-meanjs,rastemoh/mean,renethio/afelalagi,meanjs/mean,Mulumoodi/smartCams,GLatendresse/GTI510,aivrit/Prioreatize,Hkurtis/capstone,p4cm4n972/galajsy.proto,simison/mean,renethio/afelalagi,Sunderous/lupine,rastemoh/mean,tmullen71/automata,aivrit/Prioreatize,jloveland/mean,lirantal/meanjs,zhaokejian/SenImgVis-meanjs,GLatendresse/GTI510,vaucouleur/mean,tonymullen/flipflop,combefis/OpenSM,tonymullen/flipflop,zhaokejian/SenImgVis-meanjs,Mulumoodi/smartCams,GLatendresse/GTI510,osbornch/image-stock,osbornch/image-stock,gaelgf/twitter-mongo,lirantal/meanjs,Hkurtis/capstone,trendzetter/VegetableGardenPlanner,READYTOMASSACRE/example-calendar-mean,p4cm4n972/galajsy.proto