Fix tns run ios when no simulator is running (#3064)

In case when there's no device attached and no simulator running, `tns run ios` should start default iOS Simulator. However, this fails. The problem is resolved in `ios-sim-portable` 3.1.1.
Bump the version, so the issue will be resolved.

Author: rosen-vladimirov

npm-shrinkwrap.json

@@ -45,7 +45,7 @@
     "inquirer": "0.9.0",
     "ios-device-lib": "0.4.8",
     "ios-mobileprovision-finder": "1.0.10",
-    "ios-sim-portable": "3.1.0",
+    "ios-sim-portable": "3.1.1",
     "lockfile": "1.0.1",
     "lodash": "4.13.1",
     "log4js": "1.0.1",