minimal readme and enable cache analysis

Signed-off-by: Ava Hahn <a.hahn@f5.com>

kaproxy/run.sh

@@ -5,6 +5,7 @@ function p_invoke() {
 	valgrind --tool=callgrind                         \
 		--trace-children=no                           \
 		--callgrind-out-file=/tmp/callgrind.output    \
+		--cache-sim=yes                               \
 		/nginx/objs/nginx                             \
 			-p /tmp                                   \
 			-e /tmp/error.log                         \