add screenshot

Author: nemanjam

README.md

@@ -6,6 +6,10 @@
 - Github pages: https://nemanjam.github.io
 - Docker: https://nmc-docker.arm1.nemanjamitic.com
 
+## Screenshots
+
+![Screenshot_1](/docs/screenshots/Screenshot_1.png)
+
 ## Features
 
 - Latest Astro, static, high performance website
@@ -30,6 +34,8 @@
 
 ## Installation
 
+## Implementation details
+
 ## Deployment
 
 ## Roadmap