If you want to use it as a Site Logo in your Top Bar in Foundation, you need some steps:
Drag your SVG into the Resources of RapidWeaver
In your Top Bar Title Setup change the setting from Site Setup to Custom Data
Set Logo Mobile to the SVG logo in the Resources
The Logo is not visible in edit mode
In the preview mode, you can see the logo. The height of the logo is the same size like the Top Bar height. We can add some padding to the top and bottom to give it some space.
Open the page inspector and past following lines into it:
.top-bar .title-area .name img{ padding-top: 10px; padding-bottom: 10px; }
You have to adjust padding for your needs. If you want to use the Top Bar on several pages, paste the code in the Code area of the settings.
Now the Top Bar looks now much better with some space.
Update (07/24/17)
Rapidweaver 7 supports now SVG for logos. Great times. :)