Please include more descriptive text markdown links

[keklundrh]

Please update image links such that html gets rendered with more descriptive "alt text".

For exmple:

![chat-example.png](docs/images/chat-example.png)
![architecture.png](docs/images/architecture.png)

chat-example.png and architecture.png are used as alt text when markdown is rendered as html. Please update those descriptions to something more descriptive when possible. What is it an architecture of?

[RHRolun]

It's included in #26 and will be added as soon as it's merged