Update README.md

README.md

 # CAD_drawings
 You can download these CAD drawings and 3D print it to make the drone.
 
-You can cite the article [paper]:
+If you used this code, kindly consider citing the [paper]:
 
 E. Andersson and A. Bogga, ‘Hexacopter with gripping module’, Bachelor's Dissertation, Halmstad University, Sweden 2018.