Update main README to better introduce the project.

[roboyoshi]

The current readme is very minimalistic and lacks some important information to users who are not familiar with the curation of data, filetrees, git, or anything like it.

TODO:

• [ ] Improve the Introduction
• [ ] Add Instructions on how to use this filetree (e.g. downloading a release, switching branches, etc)
• [ ] Add additional information/links/alternatives

[pavansairatna]

infile