.osx: Suppress error messages when running `~/.osx` twice

Closes #266.
.aliases: Improve `ips`

Ref. #268 and #269.
Make `.cask` executable
.osx: Minimize windows into their application’s icon

Closes #271.
init: Add iTerm colors

Closes #274.
init: Install Sublime Text settings

Closes #275.
.osx: Rename computer name
.aliases: Lowercase `projects` dir
.osx: Don’t prompt when quitting iTerm
README: Update link to Lauri Ranta’s resources
.osx: Add SSD-specific tweaks

Source: http://forums.macrumors.com/showthread.php?t=1505922
.osx: Remove broken three-finger swipe commands

If anyone knows how to make this work, please let me or @necolas know!

Ref. #171.
.osx: Don’t `kill` Dashboard

`killall Dashboard` doesn’t actually do anything. To apply the changes for Dashboard, `killall Dock` is enough as Dock is Dashboard’s parent process.

Closes #277.
.aliases: Add `afk` to lock the screen

Closes #258.
README: Document the `.cask` file

Closes #280.
.osx: Disable smart quotes and dashes
.aliases: Add `reload`

`reload` invokes the shell as a login shell, which essentially reloads it.

Closes #247.
.aliases: Update RubyGems before updating installed gems

Closes #282.
.aliases: Add `npme`

`npme` is like `npm` except it uses a registry located in Europe, causing it to be much faster for Europeans. See <http://npmjs.eu/> for more information.

Closes #284.
Use `Brewfile` now that Homebrew supports it

https://github.com/mxcl/homebrew/blob/master/Library/Contributions/cmd/brew-bundle.rb
https://coderwall.com/p/afmnbq