list is-mobile in package.json - it was already in package-lock

Author: archmoj

package.json

@@ -93,6 +93,7 @@
     "glslify": "^7.0.0",
     "has-hover": "^1.0.1",
     "has-passive-events": "^1.0.0",
+    "is-mobile": "^2.1.0",
     "mapbox-gl": "1.3.2",
     "matrix-camera-controller": "^2.1.3",
     "mouse-change": "^1.4.0",