pox: general cleanup.

Closes Homebrew/homebrew#32399.

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

Formula/pow.rb

@@ -1,18 +1,18 @@
-require 'formula'
+require "formula"
 
 class Pow < Formula
-  homepage 'http://pow.cx/'
-  url 'http://get.pow.cx/versions/0.4.3.tar.gz'
-  sha1 '7e1faf3c33588bc3e73fb3583265e050a48718b0'
+  homepage "http://pow.cx/"
+  url "http://get.pow.cx/versions/0.4.3.tar.gz"
+  sha1 "7e1faf3c33588bc3e73fb3583265e050a48718b0"
 
-  depends_on 'node'
+  depends_on "node"
 
   def install
-    libexec.install Dir['*']
-    (bin/'pow').write <<-EOS.undent
+    libexec.install Dir["*"]
+    (bin/"pow").write <<-EOS.undent
       #!/bin/sh
-      export POW_BIN="#{HOMEBREW_PREFIX}/bin/pow"
-      exec "#{HOMEBREW_PREFIX}/bin/node" "#{libexec}/lib/command.js" "$@"
+      export POW_BIN="#{bin}/pow"
+      exec "#{HOMEBREW_PREFIX}/opt/node/bin/node" "#{libexec}/lib/command.js" "$@"
     EOS
   end