Changes in example ns according to issue bbatsov#64

According to conversation in issue bbatsov#64 there is better to use [] in ns declaration after special forms (:require, :use) since it's clearly describes data. I think same can be applied to :import and any other form in ns macro.

Author: Gonzih

README.md

@@ -253,14 +253,14 @@ pairwise constructs as found in e.g. `let` and `cond`.
  ```Clojure
  (ns examples.ns
  (:refer-clojure :exclude [next replace remove])
- (:require (clojure [string :as string]
-  [set :as set])
+ (:require [clojure.string :as s :refer [blank?]]
+ [clojure.set :as set]
  [clojure.java.shell :as sh])
- (:use (clojure zip xml))
+ (:use [clojure xml zip])
  (:import java.util.Date
  java.text.SimpleDateFormat
- (java.util.concurrent Executors
- LinkedBlockingQueue)))
+ [java.util.concurrent Executors
+ LinkedBlockingQueue]))
  ```
 
 * Prefer using `:require :refer :all` over `:use` in ns macro.