brew formula and readme updated

README.md

@@ -156,7 +156,7 @@ There are intermediate characters which declare special instructions. For
 instance, a comma `,` allows pup to specify mulitple groups of selctors.
 
 ```bash
-cat robots.html | pup 'title, h1 span[dir="auto"]'
+$ cat robots.html | pup 'title, h1 span[dir="auto"]'
 <title>
  Robots exclusion standard - Wikipedia, the free encyclopedia
 </title>

pup.rb

@@ -2,14 +2,14 @@ require 'formula'
 
 class Pup < Formula
   homepage 'https://github.com/EricChiang/pup'
-  version '0.3.4'
+  version '0.3.5'
 
   if Hardware.is_64_bit?
-    url 'https://github.com/EricChiang/pup/releases/download/v0.3.4/pup_darwin_amd64.zip'
-    sha1 '5fec62701a49bfd5eaa4b9c980e9c06dcece78c6'
+    url 'https://github.com/EricChiang/pup/releases/download/v0.3.5/pup_darwin_amd64.zip'
+    sha1 '6991dc9408e02adfa0ed5866eb7e284a94d79a77'
   else
-    url 'https://github.com/EricChiang/pup/releases/download/v0.3.4/pup_darwin_386.zip'
-    sha1 '1eb129c662d7e323c9b1e8f8ed3b8e28ce521434'
+    url 'https://github.com/EricChiang/pup/releases/download/v0.3.5/pup_darwin_386.zip'
+    sha1 'ec58d15a39ab821caa5f903035862690bbeb4dfe'
   end
 
   def install