Edit in JSFiddle

var sourceWMSAddress = new ol.source.ImageWMS({
	url: "http://wxs.ign.fr/wnow33wqimoktpt0unhgwo0m/inspire/v/wms",
  params: {
  	LAYERS: "BU.Building,TN.RoadTransportNetwork,TN.RailTransportNetwork,AD.Address"
  }
})

var mLayer = new ol.layer.Image({
	source: sourceWMSAddress
}) ;
 
 var map = new ol.Map({
   target: 'map',
   layers: [
    /* new ol.layer.Tile({
       source: new ol.source.MapQuest({
         layer: 'sat'
       })
     }),*/
     mLayer
   ],
   view: new ol.View({
     center: ol.proj.fromLonLat([2.424, 48.845]),
     zoom: 10
   })
 });

<div id="map" class="map"></div>

.map {
  height: 80%;
  width: 100%;
  border: solid;
}