Allow recognition of image URL in Vision API

[zywcode]

Now, it's support two type that local file and gcsImageUri.
eg: /data/images/aa.jpg, {"name": aa.jpg, "bucket": {"name": "demo"}}
Can you add the support of image url.
eg:http://mydomain/images/aa.jpg

[stephenplusplus]

Which part of our API are you referring to?

[zywcode]

Vision.findImages_(images, callback);
Can you accept the parameter of url type?
I want to detect the image of url, not File.
eg:http://mydomain/images/aa.jpg

[jgeewax]

I don't think the Vision API supports "any URL", but specifically a gcs:// URL.

[stephenplusplus]

Cool idea @zywcode. I put a PR together: #1240 -- please try it out!

$ npm install --save stephenplusplus/gcloud-node#spp--1239

[zywcode]

Thanks @stephenplusplus . That's it what I want.