Missing Architecture image in readme.md file

[slahirucd7]

Type of issue:

• Bug / Error
• Idea / Feature
• Improvement detail

Short description on the issue

In the readme.md file architecture image relevant to the repository is missing and not showing.
As discovered, image included in the readme.md file no more at the location.
There is no image named "architecture.jpg" at the moment.

Possible fix

Better if updated version of the architecture image can include or add previously used image
to the repository. Then contributors can have better idea about structure of the project.
In pull request #116 there is a suggested architecture diagram.