first stab and mac instructions

...ion_instructions/macintosh/JupyterLabLaunchAssociator.zip

installation_instructions/macintosh/images/.DS_Store

...nstructions/macintosh/images/anaconda_download_button.png

installation_instructions/macintosh/images/anaconda_link.png

...ion_instructions/macintosh/images/download_parent_dir.png

installation_instructions/macintosh/images/finder.png

...llation_instructions/macintosh/images/install_for_all.png

installation_instructions/macintosh/images/launchpad.png

...llation_instructions/macintosh/images/new_kernel.json.png

...tion_instructions/macintosh/images/open_with_launcher.png

...on_instructions/macintosh/images/original_kernel.json.png

installation_instructions/macintosh/images/other_group.png

installation_instructions/macintosh/images/other_open.png

...n_instructions/macintosh/images/proper_python_version.png

...nstructions/macintosh/images/show_filename_extensions.png

installation_instructions/macintosh/images/show_original.png

installation_instructions/macintosh/images/terminal_logo.png

...ation_instructions/macintosh/installation_instructions.md