add example, update readme

examples/osc1.lisp

@@ -0,0 +1,11 @@
+(clear)
+(def x (of (osc "/test") "args" "0" "value"))
+(def y (of (osc "/test") "args" "1" "value"))
+(def r (of (osc "/test") "args" "2" "value"))
+
+(fill 
+(circle x y r)
+"red")
+(stroke 
+(circle x y r)
+5 "white")