Ignore hidden files in datasets.ImageFolder?

[lopuhin]

For example, OS X likes to create .DS_Store files and they confuse datasets.ImageFolder (more precisely, the find_classes function) - it thinks this is one of the classes. Maybe it makes sense to ignore hidden files when determining classes that are present in a folder, what do you think? This particular case can also be solved if only directories were considered, not sure if it's ok to just skip regular files.

[lopuhin]

Although with #100 it is maybe less important

[daavoo]

I found the same problem.

This is fixed in this commit: c0a6cfe

But this is not included in 0.1.7 release. Installing from source includes the commit and solve the problem

[lopuhin]

Ah, so it's fixed already, great!