docs audit - RFC on homepage changes

[tgrecojs]

Looking at the docs home page, the essentials section in particular could use some updating. I'm opening up this issue to get feedback on whether or not others think these changes are warranted.

So just to provide an example of what an update would look like, here is a new excerpt for the first card, "What is Akash"

Example

What is Akash

The last few years have seen the Akash community succeed in their collective efforts to provide an alternative route for obtaining cloud compute services that are not only more cost-effective but also more resilient. At the heart of this success is the Akash marketplace, which provides a secure, transparent venue for buying and selling compute resources.

[HoomanHQ]

A small suggestion; since it's a developer docs, instead of being historical: we should be pretty straight to the point..

[tgrecojs]

Good call @HoomanHQ I agree completely. updating #132 appropriately