allow all flags to pass through new npm test script

Author: mwcz

scripts/test.sh

@@ -3,8 +3,8 @@
 CMD="npm run build $@; ./node_modules/.bin/wct --configFile wct.conf.json"
 
 for el in "$@"; do
-  if [[ "$el" == "-p" ]]; then
-    CMD="$CMD -p"
+  if [[ $el == -* ]]; then
+    CMD="$CMD $el"
   else
     CMD="$CMD \"elements/$el/test/\""
   fi