v012: Update the docs - User

[dsmello]

Update the documentation of the project:

• [ ] What's the starname
• [ ] The starname webapp
• [ ] How to install the starnamed cli
• [ ] How to get tokens
• [ ] How to:
  • [ ] Buy a domain
  • [ ] Buy an account
  • [ ] Create an account on my domain
  • [ ] sell an account or domain
  • [ ] Stake tokens