Adding Google Webmaster's verification meta tag to your site
Adding the Google Webmaster's verification meta tag to your site is very easily done with the Layout & Design tool.
Google's instructions indicate the following:
Copy the meta tag below, and paste it into your site's home page. It should go in the <head> section, before the first <body> section. To stay verified, don't remove the meta tag, even after verification succeeds.
And then they provide a meta tag like this example below
<meta name="google-site-verification" content="fGBeZPfzbeHfcug7kdVRU0MRGBO8AasaTeK-bk_dH_M" />
To add it to the <head> of your RebelMouse site, here are 3 easy steps:
1) In the Layout & Design tool, click on the Top Bar page
2) Once in there, select the main column and click on the " +Add Element " button on the top right
3) From the element list, click on 'Header Code'
4) Once the Header Code element is placed, click on it: a small box will appear on the right, where you can paste your meta tag.
Remember to hit save and voilá!