build: enable release option

Change-Id: I993657cfb5d350296db52b620702d1b4923a9322
diff --git a/compile-ios.sh b/compile-ios.sh
index 55c5dae..da95825 100755
--- a/compile-ios.sh
+++ b/compile-ios.sh
@@ -14,6 +14,9 @@
     --host=*)
       HOST="${1#--host=}"
     ;;
+    --release)
+    RELEASE=1
+    ;;
   esac
   shift
 done