Update editor alias to use Atom
Add alias to find top 10 most-used shell commands

Credit: https://coderwall.com/p/bvgesq
Add atom keymaps to go to next/previous git diff hunk
Type less
Fix issue with ctrl-k keybinding in Atom

Atom's built-in keybinding for ctrl-k (shown below) was taking
precedence over my custom keybinding.

  ".editor": {
    "ctrl-k": "editor:cut-to-end-of-line",

By making the CSS selector more specific in my custom keybindings, we
ensure that Atom uses my keybinding instead of the default one.
Update config.cson for Atom
Add close-all-panes command for Atom