Update ReadME

[tonoizer]

Issue description

Describe your issue in detail here

Because our Project is Open Source we should make a proper Readme for others which check out our Project!.

Definition Of Ready (DoR)

This issue can be worked on if

• a developer is assigned
• the issue is labeled
• the issue is assigned to the current sprint
• the issue is estimated
• a meaningful title has been set
• the issue is described in detail

[tonoizer]

Hey team! Please add your planning poker estimate with Zenhub @roman533 @Claiyc