Atom Keybindings

keymap.cson

'body':
  'ctrl-shift-s': 'window:save-all'

'.workspace .editor':
  'ctrl-d': 'editor:duplicate-lines'
  'ctrl-shift-D': 'editor:delete-line'

'.editor':
  'alt-shift-right': 'editor:select-to-end-of-line'
  'alt-right': 'editor:move-to-end-of-line'
  'alt-shift-left': 'editor:select-to-first-character-of-line'
  'alt-left': 'editor:move-to-first-character-of-line'

So for MAC you can swap cmd and ctrl logic which gets you closer to windows, then use:

'body':
  'cmd-shift-s': 'window:save-all'
  'ctrl-cmd-r': 'window:reload'

'.workspace .editor':
  'cmd-d': 'editor:duplicate-lines'
  'cmd-shift-D': 'editor:delete-line'

'.editor':
  'alt-shift-right': 'editor:select-to-end-of-line'
  'alt-right': 'editor:move-to-end-of-line'
  'alt-shift-left': 'editor:select-to-first-character-of-line'
  'alt-left': 'editor:move-to-first-character-of-line'

'atom-text-editor':
  'cmd-right': 'editor:move-to-next-subword-boundary'
  'cmd-left': 'editor:move-to-previous-subword-boundary'
  'cmd-shift-left': 'editor:select-to-previous-subword-boundary'
  'cmd-shift-right': 'editor:select-to-next-subword-boundary'
  'cmd-down': 'editor:move-line-down'
  'cmd-up': 'editor:move-line-up'

Which gets your mapping very nearly the same for windows and MAC in atom. Or at least for all of the commands I use often enough that I can think of them off the top of my head, we'll find out over time if there are any missing ones...Just have to deal with ctrl+tab and alt+tab keys being swapped for mac vs win, and the fact that alt is out of place...