Update CONTRIBUTORS.md

Author: bojanpy

CONTRIBUTORS.md

@@ -2,6 +2,21 @@ PyconBalkan Website contributors
 ============================================
 
 * **[Bojan Jovanovic](https://github.com/virogenesis)**
-* **[Katia Nakamura](https://github.com/katiayn)**
+* **[Katia Nakamura](https://github.com/kolebre)**
+* **[Konstantin Krbacevic](https://github.com/nadaj)**
+* **[Vishvajit Pathak](https://github.com/VishvajitP)**
+* **[Nada Jankovic](https://github.com/nadaj)**
+* **[Ülgen Sarıkavak](https://github.com/ulgens)**
+* **[Midhat Sibonjic](https://github.com/midhatstam)**
+* **[Thiago Rossener](https://github.com/thiagorossener)**
+* **[Milos Mrdakovic](https://github.com/mrdaak)**
+* **[Viktor Kerkez](https://github.com/alefnula)**
+* **[Halit Guvenilir](https://github.com/halitguvenilir)**
+* **[Jacques Laroche](https://github.com/jlar0che)**
+* **[Mario Hunka](https://github.com/maroshmka)**
+
+
+ 
+