Update the README based on new project layout.
Update the README based on new project layout.

Provide a brief overview of the features as well as how picoCTF-web
integrates with the rest of the picoCTF-platform.

cganas/picoCTF-web,picoCTF/picoCTF-web,cganas/picoCTF-web,picoCTF/picoCTF-web,picoCTF/picoCTF-web,cganas/picoCTF-web,picoCTF/picoCTF-web,cganas/picoCTF-web