update docs to include details on the `app` and `plugins` properties of route config.
update docs to include details on the `app` and `plugins` properties of route config.

Eric013/hapi,credosam/hapi,youprofit/hapi,Binarytales/hapi,SimonLab/hapi,udhayam/hapi,udhayam/hapi,StudyForFun/hapi,elnaz/hapi,Marsup/hapi,zhoujia123/hapi,julianduque/hapi,HugoRLopes/hapi,DJMcK/hapi,cesarmarinhorj/hapi,bells17/hapi,vertiman/hapi,shalomabitan/hapi,ClaudeHarry/hapi,Marsup/hapi,julianduque/hapi,analytically/hapi,evdevgit/hapi,credosam/hapi,papimomi/hapi,Eric013/hapi,jefflembeck/hapi,jrmce/hapi,pandeysoni/hapi,DJMcK/hapi,pandeysoni/hapi,youprofit/hapi,jrmce/hapi,StudyForFun/hapi,wookiehangover/hapi,jefflembeck/hapi,bbondy/hapi,danielb2/hapi,vertiman/hapi,pandeysoni/hapi,ldesplat/hapi,danielb2/hapi,bells17/hapi,aulvi/hapi,aulvi/hapi,analytically/hapi,camerow/hapi,papimomi/hapi,elnaz/hapi,rmoorman/hapi,hulbert/hapi,hulbert/hapi,rmoorman/hapi,ryanmurakami/hapi,toboid/hapi,wzrdtales/hapi,ldesplat/hapi,Binarytales/hapi,deepakshrma/hapi,ryanmurakami/hapi,elnaz/hapi,rodfernandez/hapi,camerow/hapi,wookiehangover/hapi,zhoujia123/hapi,HugoRLopes/hapi,evdevgit/hapi,cesarmarinhorj/hapi,rodfernandez/hapi,deepakshrma/hapi,toboid/hapi,shalomabitan/hapi,ClaudeHarry/hapi,wzrdtales/hapi,bbondy/hapi,SimonLab/hapi