hub 1.11.0

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes Homebrew/homebrew#25393.

Formula/hub.rb

@@ -2,19 +2,26 @@ require 'formula'
 
 class Hub < Formula
   homepage 'http://hub.github.com/'
-  url 'https://github.com/github/hub/archive/v1.10.6.tar.gz'
-  sha1 'e29d158c65a10ef3889f4af438bf1fb50fbd0536'
+  url 'https://github.com/github/hub/archive/v1.11.0.tar.gz'
+  sha1 'fea06d242af3be473b78bb738a04afc11ca4df21'
   head 'https://github.com/github/hub.git'
 
+  option 'without-completions', 'Disable bash/zsh completions'
+
   def install
+    ENV['GIT_DIR'] = downloader.cached_location/'.git' if build.head?
+
     rake "install", "prefix=#{prefix}"
-    bash_completion.install 'etc/hub.bash_completion.sh'
-    zsh_completion.install 'etc/hub.zsh_completion' => '_hub'
+
+    if build.with? 'completions'
+      bash_completion.install 'etc/hub.bash_completion.sh'
+      zsh_completion.install 'etc/hub.zsh_completion' => '_hub'
+    end
   end
 
   test do
     HOMEBREW_REPOSITORY.cd do
-      assert_equal 'bin/brew', `#{bin}/git ls-files -- bin`.strip
+      assert_equal 'bin/brew', `#{bin}/hub ls-files -- bin`.strip
     end
   end
 end