Trained weights for NTU

Update readme for NTU

Signed-off-by: Diogo Luvizon <[email protected]>

Trained weights for PennAction

Add support to NTU

Signed-off-by: Diogo Luvizon <[email protected]>

Trained weights for Human3.6M

3D human pose estimation on Human3.6M

Signed-off-by: Diogo Luvizon <[email protected]>

Trained weights for MPII

MAT file with annotations for MPII single person and trained weights for 2D pose estimation.