add a test for #136
add a test for #136

test to make sure #136 works

wolfgangwalther/jsPsych,msrresearch/jsPsych,andyh616/jsPsych,jspsych/jsPsych,adrianoesch/jsPsych,Scienthusiast/jsPsych,jodeleeuw/jsPsych,vergenzt/jsPsych,jspsych/jsPsych,erikasf/jsPsych,shamrt/jsPsych,jspsych/jsPsych,andyh616/jsPsych,wolfgangwalther/jsPsych,shamrt/jsPsych,jspsych/jsPsych,erikasf/jsPsych,Scienthusiast/jsPsych,adrianoesch/jsPsych,vergenzt/jsPsych