added deleteFeatures methods

[jgravois]

i've added a couple methods so that clients can pass an array of objectIds in a single request to the server.

map.on('draw:deleted', function(e) {
    var delArray = [];
    e.layers.eachLayer(function(layer) {
      var id = layer.feature.id;
      delArray.push(id);
    });
    pedestrianDistricts.deleteFeatures(delArray, function(error, response) {
      console.log(error, response);
    });
});

to do:

• - write tests
• - update our sample app to use the new method (via be45fb6)
• - update the doc

[patrickarlt]

@jgravois looks like the tests are doing their usual failures for unrelated reasons. Could you finish this up today? I could fix the tests (again) and do a release tomorrow.

[jgravois]

ok. ready to merge now. im going to wait until we tag to update the editing sample to use the new method. (i can bump the CDN tagged versions in all the samples at the same time).

[patrickarlt]

@jgravois let me do a release first and make sure everything is up to date. Then I want to switch to jsdelivr.com CDN where ever we can.

[jgravois]

👍