Add video progress bar

[GuillaumeGomez]

However, it misses the css changes which follows:

.valiant-progress-bar {
    width: 100%;
    height: 8px;
    overflow: hidden;
}
.valiant-progress-bar:hover {
    cursor: pointer;
}
.valiant-progress-bar > div {
    height: 100%;
    float:left;
    background-color: #444;
}
.valiant-progress-bar > div:first-child {
    background-color: red;
}

for the simple reason that I have absolutely no clue where to find this file in here.

Fixes #30.

[flimshaw]

Thanks for this! i'll take a look this evening

[GuillaumeGomez]

What will happen to the css?

[flimshaw]

I merged it into the main .less file that holds it, and made a few minor tweaks. Thanks again, it's live on https://flimshaw.github.io/Valiant360/