[js] Wrong highlighting when using ES6 interpolation

[soyzamudio]

• VSCode Version: 0.10.11 (0.10.11)
• OS Version: 10.11.2

Everything after the interpolated text is highlighted as a string.

[aeschli]

See to be fixed in the March release.
I tried with this sample:

function hello(param) {
    return {
        message: `This ${this.param[0].name} is out of stock`,
        buttons: [

        ]
    }
}