sample usage:

<script type="text/javascript" src="/public/javascripts/jquery-1.8.1.min.js"></script>
<script type="text/javascript" src="/public/javascripts/omh.js"></script>

<script type="text/javascript">
  omh.init("https://dev.ohmage.org/app","OMH")
  omh.authenticate("USERNAME","PASSWORD",{
    success:function(){
      omh.read(
      "omh:ohmage:observer:com.openmhealth.ohmage.va.ptsd_explorer:appLaunched",
      "1",{success:function(res){
          console.log("read response",res)
        }})
    }
  })
</script>