tutorial files orgnized in folders
path mess up fix
added README files
link to ipyhthon viewer updated
conv net test updated
added conv.yaml
convnet notebook updated
added cleaunp saved files
README for conv added, notebooks updated with save_path
skip if no data for conv
big doc and format cleanup
fix maxout class docstrings
Merge pull request #682 from goodfeli/fix_init_docstring

big doc and format cleanup
Merge pull request #683 from goodfeli/maxout_docstring

fix maxout class docstrings
Merge pull request #676 from memimo/tutorial

Tidy up tutorials