(demo): FlexLayout Splitter demo not working on IE11

[ankur021188]

FlexBox Splitter not working on IE 11.

Code

Usage

<div fxLayout="row" ngxSplit="row">
  <div fxFlex="30%" ngxSplitArea>
    Left
  </div>
  <div fxFlex="5px">
    <a href="#" ngxSplitHandle>...</a>
  </div>
  <div fxFlex="70%" ngxSplitArea>
    Right
  </div>
</div>

See #266 is not working.

Please provide the steps to resolve the issue.

The main reason for this issue is when we start dragging, after a moment when SplitAreaDirective.activatedValue starts returning values which are actually decimal numbers, in IE the value returned is NaN.

So, how to resolve the issue?

[CaerusKaru]

Will investigate more once #672 is in