add code to load images from local folder

[daspartho]

Added code example for loading images from a local folder.

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[RELNO]

@daspartho good idea. To elaborate (especially for colab users) we can include:

from google.colab import drive
drive.mount('/content/gdrive')

PATH= "/content/gdrive/MyDrive/<FOLDER>/" //pytorch will expect <train> subfolder inside 
!ls {PATH}  

dataset = torchvision.datasets.ImageFolder(root=PATH, transform=
                                           torchvision.transforms.Compose([
                               torchvision.transforms.ToTensor(),
                               torchvision.transforms.Resize(28),
                               ]))