Redefine readme.md with new Table structure

[take2rohit]

It seems very redundant to add start and complete date in readme.
Instead we can have a new table format for all fields

Paper | Notes Link | Paper Highlight | Notes Author

Paper highlight column will contain a single line summary of the paper

Sample
ICML 2020 Highlight

This idea was given by @SharathRaparthy

Let me know what you