Updated run_example
echo "[info] Running sum of array"
-./pallenec examples/sum_of_array_main/sum_of_array.pln
-./lua/src/lua examples/sum_of_array_main/main.lua
+./pallenec examples/sum_of_array/sum_of_array.pln
+./lua/src/lua examples/sum_of_array/main.lua
+echo ""
echo "[info] Running rectangle area"
./pallenec examples/rectangle/rectangle.pln
./lua/src/lua examples/rectangle/main.lua
+echo ""
echo "[info] Running arithmetic"
./pallenec examples/arithmetic/arithmetic.pln
./lua/src/lua examples/arithmetic/main.lua
