Option to strip svg tag

[nickspiel]

It would be great to have the option to strip out the wrapping

This would help when using frameworks like angular to inject the svg into the body of the document.

At the moment this is achieved with (note the double quotes is required to parse an svg in angular):

Which will output the following:

Anyways, food for thought.

I will look into it and propose a pull request if I find a solution.