Use HTTPS for the homepage.

Library/Homebrew/global.rb

@@ -15,7 +15,7 @@ ARGV.extend(HomebrewArgvExtension)
 
 HOMEBREW_PRODUCT = ENV["HOMEBREW_PRODUCT"]
 HOMEBREW_VERSION = ENV["HOMEBREW_VERSION"]
-HOMEBREW_WWW = "http://brew.sh".freeze
+HOMEBREW_WWW = "https://brew.sh".freeze
 
 require "config"
 

README.md

 # Homebrew
-Features, usage and installation instructions are [summarised on the homepage](http://brew.sh). Terminology (e.g. the difference between a Cellar, Tap, Cask and so forth) is [explained here](docs/Formula-Cookbook.md#homebrew-terminology).
+Features, usage and installation instructions are [summarised on the homepage](https://brew.sh). Terminology (e.g. the difference between a Cellar, Tap, Cask and so forth) is [explained here](docs/Formula-Cookbook.md#homebrew-terminology).
 
 ## Update Bug
 If Homebrew was updated on Aug 10-11th 2016 and `brew update` always says `Already up-to-date.` you need to run:

docs/Installation.md

 # Installation
 
 The suggested and easiest way to install Homebrew is on the
-[homepage](http://brew.sh).
+[homepage](https://brew.sh).
 
 The standard script installs Homebrew to `/usr/local` so that
 [you don’t need sudo](FAQ.md) when you
@@ -55,5 +55,5 @@ Apple Developer account on older versions of Mac OS X. Sign up for free
 [here](https://developer.apple.com/register/index.action).
 
 <a name="4"><sup>4</sup></a> The one-liner installation method found on
-[brew.sh](http://brew.sh) requires a Bourne-compatible shell (e.g. bash or
+[brew.sh](https://brew.sh) requires a Bourne-compatible shell (e.g. bash or
 zsh). Notably, fish, tcsh and csh will not work.