isRelativeToRoot bug in Windows

[evanlask]

function isRelativeToRoot(p){
    return p.indexOf(path.normalize(path.sep)) === 0
}

On Windows path.sep = ""
On OSX path.sep = "/"

root will not work on Windows but it will on OSX when including html like shown below.
@@include = /template/nav.html

It may be safe to change that function to get it working on both platforms.

function isRelativeToRoot(p){
    return p.indexOf('/') === 0
}

[FrankFang]

Yeah. you are right. Feel free to make a PR.

[FrankFang]

Hi, try gulp-html-extend@1.1.3 :)