Update README.md

Author: mohdibntarek

README.md

@@ -1,4 +1,6 @@
-# TopOpt
+# TopOpt.jl 
+
+![image](https://github.com/JuliaTopOpt/TopOpt.jl/assets/19524993/585ca4eb-83df-48d4-850c-1debc3d93eff)
 
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