Allow Multiple Pushy Menus with Different Buttons

[Oxibug]

We've made some changes to enable using multiple buttons to trigger multiple different menus.

Added Classes:

wrp-pushy-trigger: to wrap the [menu-btn] inside it and to define the new data attributes

Added Data Attributes:

data-pushy-target: define the target menu unique class.
data-pushy-body-class: add some unique classes to the body selector.

Example:

<nav class="pushy pushy-left pushy-for-button-one">
    <div class="pushy-content">
    .....
    </div>
</nav>

<nav class="pushy pushy-right pushy-for-button-two">
    <div class="pushy-content">
    .....
    </div>
</nav>

<div class="wrp-pushy-trigger" data-pushy-target=".pushy-for-button-one" data-pushy-body-class="pushy-sidemenu-one another-class-one">
    <button class="menu-btn">Menu 1</button>
</div>

<div class="wrp-pushy-trigger" data-pushy-target=".pushy-for-button-two" data-pushy-body-class="pushy-sidemenu-two another-class-two">
    <button href="#" class="menu-btn">Menu 2</button>
</div>