ONNX Operator "Gather" is not implemented by onnx_mxnet

[HeliWang]

In https://github.com/onnx/onnx-mxnet/blob/0ca9a87088619499c932a78cc2871a14b87ab20d/onnx_mxnet/import_helper.py, "Gather" operator is commented. Any idea of solution when the ONNX graph uses “Gather” operator? Thanks

[Roshrini]

ONNX's "Gather" operator can be mapped directly to MXNet's "take" operator.
Exception: Currently, "take" only supports axis 0.

You are welcome to contribute. You can do so by adding a mapping here:
https://github.com/onnx/onnx-mxnet/blob/master/onnx_mxnet/import_helper.py#L217
Or I will add a fix soon.

[HeliWang]

Pull request has been made: rajanksin/incubator-mxnet#1
@spidydev @Roshrini could you help to have a look? Thanks.