README.md in hightop-0.2.1 vs README.md in hightop-0.2.2

@@ -2,28 +2,21 @@
 
 A nice shortcut for group count queries
 
 ```ruby
 Visit.top(:browser)
+# {
+#   "Chrome"  => 63,
+#   "Safari"  => 50,
+#   "Firefox" => 34
+# }
 ```
 
-instead of
+Works with Active Record, Mongoid, arrays and hashes
 
-```ruby
-Visit.group(:browser).where("browser IS NOT NULL").order("count_all DESC, browser").count
-```
+[![Build Status](https://travis-ci.org/ankane/hightop.svg?branch=master)](https://travis-ci.org/ankane/hightop)
 
-Be sure to [sanitize user input](https://rails-sqli.org/) like you must with `group`
-
-Also works with arrays and hashes
-
-```ruby
-["up", "up", "down"].top(1)
-```
-
-[![Build Status](https://travis-ci.org/ankane/hightop.svg)](https://travis-ci.org/ankane/hightop)
-
 ## Installation
 
 Add this line to your application’s Gemfile:
 
 ```ruby
@@ -64,9 +57,22 @@
 
 And min count
 
 ```ruby
 Visit.top(:city, min: 10)
+```
+
+## User Input
+
+If passing user input as the column, be sure to sanitize it first [like you must](https://rails-sqli.org/) with `group`.
+
+```ruby
+column = params[:column]
+
+# check against permitted columns
+raise "Unpermitted column" unless ["column_a", "column_b"].include?(column)
+
+User.top(column)
 ```
 
 ## Arrays and Hashes
 
 Arrays