v1: New features

[jorge-d]

I shoud be able to:

• create an address and validate token through the front app
• search someone's profile by email
• see tooltips in profile page (coin name, embed button, copy to clipboard...)
• When the profil does not exist, redirect to the search page with a banner
• Implement social share of profile page (facebook & twitter should be enough)

Potential:

• Implement metrics on API requests
• Have a better landing page which explains the concept, add screenshot of embedded github readme's badges?
• write a cli script that wraps the api, @BGuimberteau ?
• Have a nice logo