feat(gulp): Add gulp task mkdir:upload to ensure upload directory exists.
feat(gulp): Add gulp task mkdir:upload to ensure upload directory exists.

Related #1175

ccheng312/chordsheets,luebken/mean,mbonig/mean,CannedFish/teammgr4fun,ckim06/crimemap,codydaig/mean,GLatendresse/GTI510,dtytomi/classiecargo,tmullen71/automata,trendzetter/mean,lirantal/meanjs,codydaig/mean,chelnydev/hive,rodp82/mean,cone-7/sistema-liga,oierbravo/meanjs-abestuz,mapping-slc/mapping-slc,zfxsss/mean,mbonig/mean,Tsuna-mi/owwwly-app,ckim06/crimemap,erChupa8/PruebaMeanJs,gaelgf/twitter-mongo,ckim06/crimemap,PayYourNight/Pay_Your_Night_MEAN,approgramer/mean,interactive-learning-systems/skill-finder,osbornch/image-stock,taobataoma/imean,jaketurton/camera-app,benobab/honolulu-meanjs,mapping-slc/mapping-slc,stefansvensson/tsp,vaucouleur/mean,rodp82/mean,colinwitkamp/DataEntry-MEAN-,renethio/afelalagi,approgramer/mean,AlekseyH/buildingCompany,zhaokejian/SenImgVis-meanjs,Sunderous/lupine,helios1989/MEANTEST,osbornch/image-stock,AbdullahElamir/Full_EXAMPLE_MEANJS,Mulumoodi/smartCams,dtytomi/classiecargo,monolithx/smallbatch-node,polakowo/seba-recver,meanjs/mean,lirantal/vault,trainerbill/mean,fauria/mean,lirantal/vault,aivrit/Prioreatize,jaketurton/camera-app,renethio/afelalagi,Mulumoodi/smartCams,Mulumoodi/smartCams,zhaokejian/SenImgVis-meanjs,interactive-learning-systems/skill-finder,Sunderous/lupine,helios1989/MEANTEST,rodp82/mean,AlekseyH/buildingCompany,damianham/boatdata,READYTOMASSACRE/example-calendar-mean,shteeven/rtd,jpca999/properties-dec,clintecum/digitalInclusion,ccheng312/chordsheets,Tsuna-mi/owwwly-app,tonymullen/flipflop,benobab/honolulu-meanjs,AlekseyH/buildingCompany,trainerbill/mean,CannedFish/teammgr4fun,JoshuaJWilborn/wilborn.tech,AbdullahElamir/Full_EXAMPLE_MEANJS,SodY2/meanAP,simison/mean,scottrehlander/lrig-mean,zfxsss/mean,erChupa8/PruebaMeanJs,ElevenFiftyApprentices/ShoppingList_J3,emaraan/BossableMeanChallenge,dcdrawk/paperCMS,pcullin-ratio/mean,jpca999/properties-dec,trendzetter/VegetableGardenPlanner,rastemoh/mean,polakowo/seba-recver,mbonig/mean,p4cm4n972/galajsy.proto,polakowo/seba-recver,caleb272/nightlife-app,stefansvensson/tsp,combefis/OpenSM,meanjs/mean,ccheng312/chordsheets,CSALucasNascimento/Personal-APP,qolart/qolart,caleb272/nightlife-app,p4cm4n972/galajsy.proto,hernii8/udemy-meanjs,tonymullen/flipflop,aivrit/Prioreatize,fauria/mean,Hkurtis/capstone,jloveland/mean,chelnydev/hive,erChupa8/PruebaMeanJs,GLatendresse/GTI510,simison/mean,steven-st-james/mapping-slc,jaketurton/camera-app,bangbh81/MyFirstMeanjs,colinwitkamp/DataEntry-MEAN-,tmullen71/automata,hernii8/udemy-meanjs,codydaig/mean,benobab/honolulu-meanjs,jloveland/mean,jpca999/properties-dec,charliejl28/MyMoments,renethio/afelalagi,hernii8/udemy-meanjs,qolart/qolart,aivrit/Prioreatize,annafatsevych/meanjs,annafatsevych/meanjs,clintecum/digitalInclusion,zhaokejian/SenImgVis-meanjs,charliejl28/MyMoments,rastemoh/mean,helios1989/MEANTEST,vaucouleur/mean,PoetsRock/mapping-slc,oierbravo/meanjs-abestuz,trendzetter/mean,SodY2/meanAP,PoetsRock/mapping-slc,taobataoma/imean,gaelgf/twitter-mongo,fauria/mean,dcdrawk/paperCMS,stefansvensson/tsp,rastemoh/mean,p4cm4n972/galajsy.proto,AbdullahElamir/Full_EXAMPLE_MEANJS,lirantal/meanjs,steven-st-james/mapping-slc,trendzetter/VegetableGardenPlanner,XuanyuZhao1984/GradeUp,trendzetter/VegetableGardenPlanner,Tsuna-mi/owwwly-app,ryanjbaxter/mean,steven-st-james/mapping-slc,GLatendresse/GTI510,zfxsss/mean,Hkurtis/capstone,vaucouleur/mean,luebken/mean,shteeven/rtd,combefis/OpenSM,rastemoh/mean,zhaokejian/SenImgVis-meanjs,PayYourNight/Pay_Your_Night_MEAN,cone-7/sistema-liga,XuanyuZhao1984/GradeUp,fauria/mean,trendzetter/mean,lirantal/meanjs,trainerbill/mean,bangbh81/MyFirstMeanjs,ryanjbaxter/mean,scottrehlander/lrig-mean,gaelgf/twitter-mongo,colinwitkamp/DataEntry-MEAN-,cone-7/sistema-liga,charliejl28/MyMoments,ElevenFiftyApprentices/ShoppingList_J3,hyperreality/mean,qolart/qolart,ryanjbaxter/mean,lirantal/vault,tonymullen/flipflop,emaraan/BossableMeanChallenge,meanjs/mean,taobataoma/imean,READYTOMASSACRE/example-calendar-mean,scottrehlander/lrig-mean,PoetsRock/mapping-slc,oierbravo/meanjs-abestuz,ElevenFiftyApprentices/ShoppingList_J3,pcullin-ratio/mean,Hkurtis/capstone,hyperreality/mean,bangbh81/MyFirstMeanjs,SodY2/meanAP,dtytomi/classiecargo,monolithx/smallbatch-node,Sunderous/lupine,CSALucasNascimento/Personal-APP,zhaokejian/SenImgVis-meanjs,damianham/boatdata,PayYourNight/Pay_Your_Night_MEAN,luebken/mean,ElevenFiftyApprentices/ShoppingList_J3,caleb272/nightlife-app,dcdrawk/paperCMS,CannedFish/teammgr4fun,hyperreality/mean,simison/mean,approgramer/mean,chelnydev/hive,emaraan/BossableMeanChallenge,Tsuna-mi/owwwly-app,XuanyuZhao1984/GradeUp,osbornch/image-stock,interactive-learning-systems/skill-finder,JoshuaJWilborn/wilborn.tech,damianham/boatdata,monolithx/smallbatch-node,CSALucasNascimento/Personal-APP,jloveland/mean,clintecum/digitalInclusion,shteeven/rtd,annafatsevych/meanjs,JoshuaJWilborn/wilborn.tech,pcullin-ratio/mean,mapping-slc/mapping-slc,Hkurtis/capstone,tmullen71/automata,READYTOMASSACRE/example-calendar-mean