Fixes #1192 -- documentation clarification for isNaN
Fixes #1192 -- documentation clarification for isNaN

ijidan/underscore,zabefloyd/underscore,akre54/underscore,SeriaWei/underscore,LiskHQ/underscore,Joanna913/underscore,vincent1988/underscore,PUSEN/underscore,kuychaco/underscore,beenlee/underscore,zhangguangyong/underscore,rlugojr/underscore,wjb12/underscore,huangnan1/2016gitStudy,eaglesjava/underscore,SerenoShen/underscore,Aplopio/underscore,starterstep/underscore,rlugojr/underscore,appleboy/underscore,gougouGet/underscore,ereddate/underscore,JoaquinSiabra/underscore,strongconjunctions/underscore,hackreactor/underscore,beenlee/underscore,craigmichaelmartin/underscore,componentizr/underscore,platinumazure/underscore,jdelbello/underscore,amdjs/underscore,thiswildorchid/underscore,roychen-7/underscore,PengShi-sp/underscore,jiankers/underscore,kairyan/underscore,megawac/underscore,Forever8/underscore,AaronNGray/underscore-server,liminghui/underscore,dyx/underscore,prosenjit-itobuz/underscore,hackreactor/underscore,JonAbrams/underscore,mairasala/underscore,jianganglu/underscore,jridgewell/underscore,dfurtado/underscore,youprofit/underscore,bkillenit/underscore,bkillenit/underscore,emiel187/underscore,tnga/underscore-es,jolthoff/underscore,tnga/underscore-es,cgvarela/underscore,liyandalmllml/underscore,jpalomar/underscore,thisismygithub/underscore,gougouGet/underscore,sdwang/underscore,dxuehu/underscore,cgvarela/underscore,huzion/underscore,Aplopio/underscore,cailong1028/underscore,thisismygithub/underscore,jfarid27/underscore,Yangani/underscore,debutt/underscore,cnwhy/underscore,lis186/underscore,vinodbonala/underscore,imsingh/underscore,ElseZhang/underscore,huangnan1/2016gitStudy,Gimcrack/underscore,ijidan/underscore,LiskHQ/underscore,amdjs/underscore,kairyan/underscore,cnwhy/underscore,janocat/underscore,lucasfanning/underscore,snackshen/underscore,aziz-boudi4/underscore,ThiagoGarciaAlves/underscore,liyandalmllml/underscore,dyx/underscore,jashkenas/underscore,jfarid27/underscore,nickkneafsey/underscore,thiswildorchid/underscore,oss6/underscore,greyhwndz/underscore,keepgoingwm/underscore,vincent1988/underscore,lqjack/underscore,mdboop/underscore,JonAbrams/underscore,premkumargithub/underscore,janocat/underscore,xiaoqiang730730/underscore,dkusch/underscore,kuychaco/underscore,mitar/underscore,eaglesjava/underscore,colemakdvorak/underscore,jordanwink201/underscore,ryanwholey/underscore,emiel187/underscore,yuhualingfeng/underscore,WangRex/underscore,debutt/underscore,wxmfront/underscore,kwangkim/underscore,starterstep/underscore,youprofit/underscore,aziz-boudi4/underscore,polandeme/underscore,yekg880809/underscore,mdboop/underscore,singhsterabhi/underscore,Tetpay/underscore,platinumazure/underscore,JoaquinSiabra/underscore,npmcomponent/jashkenas-underscore,roychen-7/underscore,singhsterabhi/underscore,Yangani/underscore,PUSEN/underscore,jpalomar/underscore,greyhwndz/underscore,liminghui/underscore,irr/underscore,jolthoff/underscore,lis186/underscore,veg/underscore,akre54/underscore,polandeme/underscore,jordanwink201/underscore,ereddate/underscore,WangRex/underscore,yekg880809/underscore,Feiyang1/underscore,lucasfanning/underscore,oss6/underscore,dimitriwalters/underscore,dxuehu/underscore,mitar/underscore,ThiagoGarciaAlves/underscore,veg/underscore,keepgoingwm/underscore,kwangkim/underscore,documentcloud/underscore,wxmfront/underscore,dkusch/underscore,prosenjit-itobuz/underscore,jdelbello/underscore,cintiamh/underscore,zabefloyd/underscore,SerenoShen/underscore,mjhasbach/underscore,Tim-Zhang/underscore,mjhasbach/underscore,SeriaWei/underscore,elancom/underscore,sdwang/underscore,ligson/underscore,braddunbar/underscore,Forever8/underscore,falqas/underscore,lqjack/underscore,RepmujNetsik/underscore,cintiamh/underscore,mairasala/underscore,AaronNGray/underscore-server,jonot/underscore,nickkneafsey/underscore,snackshen/underscore,colemakdvorak/underscore,RepmujNetsik/underscore,jiankers/underscore,Joanna913/underscore,paulfalgout/underscore,falqas/underscore,jashkenas/underscore,natac13/underscore,huzion/underscore,elancom/underscore,xiaoqiang730730/underscore,dfurtado/underscore,Gimcrack/underscore,natac13/underscore,yuhualingfeng/underscore,premkumargithub/underscore,strongconjunctions/underscore,jianganglu/underscore,ElseZhang/underscore,zhangguangyong/underscore,jonot/underscore,Feiyang1/underscore,ryanwholey/underscore,ligson/underscore,wjb12/underscore,Tim-Zhang/underscore,jridgewell/underscore,irr/underscore,PengShi-sp/underscore,vinodbonala/underscore,imsingh/underscore,documentcloud/underscore,craigmichaelmartin/underscore