problem: no description for each section

[gsovereignty]

problem: users might be a bit confused about what each section is actually for.

solution: add a description to each section.

projects: Projects that are built on or for Cardano. This includes everything from developer libraries to user wallets.

events: Any Cardano related events, anywhere in the world.

research: Peer reviewed academic papers that are related to Cardano

scams: Scam websites, wallets etc. Anything that people should be wary about.

Learn: From basic introductions to developer documentation.

Community: Telegram groups, meetup groups, facebook groups, forums, etc.

[MadanBhandari]

@emurgobot claim

[MadanBhandari]

@emurgobot done in #328