Can't figure out the correct syntax for a command loading a webkit plugin

Hello,
Using Bash on Mac OS X 10.7.5 (Lion). I downloaded a GrowlSafari plugin for Webkit from its GitHub page GitHub - uasi/growl-safari-bridge: GrowlSafariBridge enables arbitrary javascript (including Safari Extensions) to notify via Growl.. In the description it says that after installing for it to run it's necessary to load the plugin with the following command:

document.write('<object type="application/x-growl-safari-bridge" width="0" height="0" id="growl-safari-bridge"></object>');

Every time I attempt to execute it BASH returns syntax error message

-bash: syntax error near unexpected token `'<object type="application/x-growl-safari-bridge" width="0" height="0" id="growl-safari-bridge"></object>''

Does anybody know what the correct syntax is?