run.sh adapted for mac

run.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 <module>"
+    exit 1
+fi
+
+module="${1#./}"
+module="${module#/}"
+module="${module%/}"
+
+iverilog -o "./$module/$module.vvp" "./$module/${module}_tb.v" || exit 1
+
+vvp "./$module/$module.vvp" || exit 1
+
+surfer "./$module/$module.vcd"