Update README.md

Merge pull request #2 from ngocson2vn/ngocson2vn/improvement

Drop old keyspace janusgraph

make sure edges have weight in query

bump up the readme file

finalizing documentation for the tutorial

add two different timeline scripts

fix timeline string

rename our timeline

separate old from new timeline

organize the supernode generator

turn users into supernodes

try to run a smaller query on hadoop stuff

update readme

Update .gitignore