Add more TopN documentation regarding Aliasing * Addresses concerns in https://github.com/druid-io/druid/issues/1134
Add more TopN documentation regarding Aliasing
* Addresses concerns in https://github.com/druid-io/druid/issues/1134

gianm/druid,b-slim/druid,jon-wei/druid,authbox-lib/druid,haoch/druid,yaochitc/druid-dev,eshen1991/druid,KurtYoung/druid,pdeva/druid,leventov/druid,elijah513/druid,eshen1991/druid,jon-wei/druid,redBorder/druid,minewhat/druid,mrijke/druid,haoch/druid,redBorder/druid,tubemogul/druid,druid-io/druid,potto007/druid-avro,tubemogul/druid,Fokko/druid,elijah513/druid,pdeva/druid,taochaoqiang/druid,Kleagleguo/druid,lcp0578/druid,wenjixin/druid,praveev/druid,erikdubbelboer/druid,gianm/druid,premc/druid,nishantmonu51/druid,anupkumardixit/druid,eshen1991/druid,pjain1/druid,skyportsystems/druid,erikdubbelboer/druid,optimizely/druid,767326791/druid,wenjixin/druid,noddi/druid,wenjixin/druid,liquidm/druid,anupkumardixit/druid,zhaown/druid,pjain1/druid,solimant/druid,winval/druid,lcp0578/druid,lcp0578/druid,du00cs/druid,implydata/druid,calliope7/druid,potto007/druid-avro,liquidm/druid,Kleagleguo/druid,michaelschiff/druid,taochaoqiang/druid,zxs/druid,gianm/druid,implydata/druid,kevintvh/druid,zhiqinghuang/druid,milimetric/druid,minewhat/druid,dclim/druid,OttoOps/druid,redBorder/druid,amikey/druid,metamx/druid,monetate/druid,dkhwangbo/druid,lizhanhui/data_druid,leventov/druid,kevintvh/druid,optimizely/druid,nvoron23/druid,friedhardware/druid,knoguchi/druid,nishantmonu51/druid,pombredanne/druid,noddi/druid,skyportsystems/druid,eshen1991/druid,fjy/druid,zhiqinghuang/druid,taochaoqiang/druid,monetate/druid,OttoOps/druid,milimetric/druid,dkhwangbo/druid,monetate/druid,elijah513/druid,potto007/druid-avro,mghosh4/druid,premc/druid,se7entyse7en/druid,druid-io/druid,qix/druid,zxs/druid,solimant/druid,zhihuij/druid,redBorder/druid,wenjixin/druid,Fokko/druid,amikey/druid,praveev/druid,zengzhihai110/druid,monetate/druid,friedhardware/druid,rasahner/druid,mangeshpardeshiyahoo/druid,rasahner/druid,skyportsystems/druid,Fokko/druid,himanshug/druid,gianm/druid,mrijke/druid,nishantmonu51/druid,penuel-leo/druid,monetate/druid,cocosli/druid,mangeshpardeshiyahoo/druid,liquidm/druid,pjain1/druid,fjy/druid,tubemogul/druid,Fokko/druid,redBorder/druid,liquidm/druid,Deebs21/druid,qix/druid,haoch/druid,dclim/druid,noddi/druid,knoguchi/druid,smartpcr/druid,kevintvh/druid,deltaprojects/druid,lcp0578/druid,du00cs/druid,himanshug/druid,qix/druid,leventov/druid,penuel-leo/druid,gianm/druid,michaelschiff/druid,penuel-leo/druid,liquidm/druid,skyportsystems/druid,nishantmonu51/druid,friedhardware/druid,friedhardware/druid,Deebs21/druid,pombredanne/druid,pjain1/druid,friedhardware/druid,knoguchi/druid,himanshug/druid,pdeva/druid,gianm/druid,minewhat/druid,andy256/druid,lizhanhui/data_druid,premc/druid,767326791/druid,767326791/druid,erikdubbelboer/druid,mghosh4/druid,dkhwangbo/druid,mrijke/druid,premc/druid,praveev/druid,winval/druid,nishantmonu51/druid,haoch/druid,pombredanne/druid,b-slim/druid,mangeshpardeshiyahoo/druid,smartpcr/druid,calliope7/druid,praveev/druid,michaelschiff/druid,lcp0578/druid,solimant/druid,Fokko/druid,nvoron23/druid,mangeshpardeshiyahoo/druid,erikdubbelboer/druid,pdeva/druid,se7entyse7en/druid,Kleagleguo/druid,kevintvh/druid,leventov/druid,taochaoqiang/druid,zhihuij/druid,OttoOps/druid,zengzhihai110/druid,haoch/druid,authbox-lib/druid,Deebs21/druid,rasahner/druid,zhaown/druid,implydata/druid,jon-wei/druid,elijah513/druid,mrijke/druid,mghosh4/druid,michaelschiff/druid,qix/druid,optimizely/druid,optimizely/druid,qix/druid,monetate/druid,OttoOps/druid,lizhanhui/data_druid,liquidm/druid,calliope7/druid,fjy/druid,se7entyse7en/druid,andy256/druid,dkhwangbo/druid,deltaprojects/druid,dclim/druid,amikey/druid,jon-wei/druid,zhiqinghuang/druid,b-slim/druid,zxs/druid,amikey/druid,767326791/druid,pombredanne/druid,guobingkun/druid,elijah513/druid,deltaprojects/druid,andy256/druid,guobingkun/druid,andy256/druid,yaochitc/druid-dev,zxs/druid,leventov/druid,jon-wei/druid,zengzhihai110/druid,gianm/druid,KurtYoung/druid,fjy/druid,premc/druid,calliope7/druid,smartpcr/druid,druid-io/druid,metamx/druid,Deebs21/druid,tubemogul/druid,implydata/druid,Deebs21/druid,rasahner/druid,cocosli/druid,michaelschiff/druid,potto007/druid-avro,deltaprojects/druid,yaochitc/druid-dev,authbox-lib/druid,zhiqinghuang/druid,Kleagleguo/druid,skyportsystems/druid,mrijke/druid,guobingkun/druid,nvoron23/druid,jon-wei/druid,calliope7/druid,praveev/druid,noddi/druid,se7entyse7en/druid,du00cs/druid,pjain1/druid,erikdubbelboer/druid,zengzhihai110/druid,nvoron23/druid,andy256/druid,pdeva/druid,taochaoqiang/druid,smartpcr/druid,michaelschiff/druid,milimetric/druid,himanshug/druid,implydata/druid,zhiqinghuang/druid,winval/druid,yaochitc/druid-dev,knoguchi/druid,zhihuij/druid,mghosh4/druid,fjy/druid,lizhanhui/data_druid,druid-io/druid,se7entyse7en/druid,kevintvh/druid,dclim/druid,metamx/druid,guobingkun/druid,michaelschiff/druid,deltaprojects/druid,dclim/druid,metamx/druid,tubemogul/druid,mghosh4/druid,druid-io/druid,cocosli/druid,pjain1/druid,mangeshpardeshiyahoo/druid,du00cs/druid,KurtYoung/druid,eshen1991/druid,minewhat/druid,anupkumardixit/druid,minewhat/druid,anupkumardixit/druid,winval/druid,lizhanhui/data_druid,nvoron23/druid,nishantmonu51/druid,zhihuij/druid,Fokko/druid,noddi/druid,metamx/druid,yaochitc/druid-dev,solimant/druid,du00cs/druid,Fokko/druid,OttoOps/druid,b-slim/druid,winval/druid,milimetric/druid,authbox-lib/druid,pombredanne/druid,767326791/druid,potto007/druid-avro,monetate/druid,wenjixin/druid,zxs/druid,mghosh4/druid,nishantmonu51/druid,knoguchi/druid,solimant/druid,KurtYoung/druid,guobingkun/druid,milimetric/druid,zhaown/druid,b-slim/druid,optimizely/druid,zengzhihai110/druid,deltaprojects/druid,zhihuij/druid,Kleagleguo/druid,himanshug/druid,implydata/druid,anupkumardixit/druid,penuel-leo/druid,cocosli/druid,zhaown/druid,mghosh4/druid,smartpcr/druid,pjain1/druid,deltaprojects/druid,KurtYoung/druid,cocosli/druid,jon-wei/druid,dkhwangbo/druid,amikey/druid,penuel-leo/druid,rasahner/druid,authbox-lib/druid,zhaown/druid