Removing Hard-Coded Local Paths to Data Directory

[jasonyzhang]

Hi,

Thanks for the great work.

One issue is that the links to ./local_data are hard-coded which makes it very difficult to run the mocap code from a different directory than the source folder.

I committed a quick fix which is just to use the parent directory of the smpl_dir as the extra_data directory name since this required the minimum number of code changes. I think a better solution might be to take in extra_data_dir as an optional parameter for BodyMocap and HandMocap, but this may change the api a bit.

[penincillin]

@jasonyzhang
Thanks, that's a great suggestion. But we are just too busy to heavily update our code recently. We will add this updating later.
Thanks again !