Added README.md

- I hope it say what I intend to create
Added fortune.js based REST API.

- There is a resource called 'Number'. It represents a number and would
  have one or many descriptions. Number has a datatype as string.
- Another resource 'Description' actually describes the number in one or
  another way. It's datatype is too string. We expect to store markdown
here but you never know !
- package.json