readme fix

Author: frenchy64

README.md

@@ -214,7 +214,7 @@ What is the current date?
 What's the next day?
 
 ```clj
-(plus now (jt/days 1))
+(jt/plus now (jt/days 1))
 ;=> #object[java.time.LocalDate "2015-09-28"]
 ```
 

docs/README.html

@@ -129,7 +129,7 @@ <h3><a href="#an-appetizer" id="an-appetizer"></a>An appetizer</h3>
 ;=&gt; #object[java.time.LocalDate "2015-09-27"]
 </code></pre>
 <p>What’s the next day?</p>
-<pre><code class="language-clj">(plus now (jt/days 1))
+<pre><code class="language-clj">(jt/plus now (jt/days 1))
 ;=&gt; #object[java.time.LocalDate "2015-09-28"]
 </code></pre>
 <p>The previous day?</p>