Update Features section on etcd.io main page

[spzala]

TheFeatures content on etcd.io points to V2 specific features that needs to be updated. e.g. it says etcd store data in hierarchically organized directories Also the interface should add gRPC.

cc @gyuho @jingyih @ptabor

@nate-double-u @chalin I will work on it or help with it there is any related updates in progress. Thanks!

[philips]

I just noticed this today. It would be a good thing to fix this as it is pretty misleading for modern etcd.

[MaxHorstmann]

Simple interface Read and write values using standard HTTP tools, such as curl

^^^ isn't this outdated in v3 as well? I'm relatively new to etcd, but my impression is that it's all gRPC now?

[ptabor]

@MaxHorstmann

etcd v3 still supports json gateway to grpc, so on the same port you cen sent grpc requests even on v3:

curl -L http://localhost:2379/v3/kv/put -X POST -d '{"key": "foo", "value": "bar"}'

[spzala]

@nate-double-u @ahrtr this is an important issue to fix. We had a bandwidth problem but now with new help we should fix it as soon as it's possible. Thanks!