We have just created (July 2018) a wordpress plugin to make it even easier to publish your BRM online booking on your wordpress site.
Details can be found here:
Just download the plugin - details here:
Then add this line to any page where you want to include the plugin:
Example Version in US
[bikerentalcalendar id="lightspeeddemo" zone="US"]
Example Version in EU
[bikerentalcalendar id="generic" zone="EU"]
the id must be the id your store...
if you're unsure then click on the link that says "online booking" at the bottom of your BRM
it will open a new tab in your browser, something like this: