Add shopee to user list. (#3425)
Add shopee to user list. (#3425)

Shopee (https://shopee.sg) use superset for data analytics, visualisation and reporting.
airbnb/caravel,airbnb/caravel,airbnb/caravel,mistercrunch/panoramix,mistercrunch/panoramix,alanmcruickshank/superset-dev,apache/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,dmigo/incubator-superset,timifasubaa/incubator-superset,FrederichCheng/incubator-superset,airbnb/superset,airbnb/caravel,airbnb/superset,FrederichCheng/incubator-superset,FrederichCheng/incubator-superset,airbnb/superset,timifasubaa/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix,dmigo/incubator-superset,alanmcruickshank/superset-dev,apache/incubator-superset,timifasubaa/incubator-superset,dmigo/incubator-superset,alanmcruickshank/superset-dev,dmigo/incubator-superset,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,FrederichCheng/incubator-superset,airbnb/superset,timifasubaa/incubator-superset,alanmcruickshank/superset-dev,apache/incubator-superset,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset