added another test and update read me

InventoryTest.java

 
         assertEquals(MAX_QUALITY, agedBrie.getQuality());
     }
+
+    @Test
+    public void testUpdate_WhenAgedBrieOnceTheSellInDatePassed() throws Exception {
+        Item agedBrie = new Item(AGED_BRIE_NAME, -1, 20);
+        int expectedQuality = agedBrie.getQuality() + 2;
+        Item[] items = {agedBrie};
+        Inventory sut = new Inventory(items);
+
+        sut.updateQuality();
+
+        assertEquals(expectedQuality, agedBrie.getQuality());
+    }
 }

README.MD

-------------------------------------------------------------------------
-This is the project README file. Here, you should describe your project.
-Tell the reader (someone who does not know anything about this project)
-all he/she needs to know. The comments should usually include at least:
-------------------------------------------------------------------------
-
-PROJECT TITLE:
-PURPOSE OF PROJECT:
-VERSION or DATE:
-HOW TO START THIS PROJECT:
-AUTHORS:
-USER INSTRUCTIONS:
+# Clean Code
+
+### **Objective:**
+* Refactor (aka clean up) the code in the `Inventory` class to make it more maintainable and readable.
+
+### **Purpose:**
+* To understand why writing test matter
+* To understand why writing readable code matter
+
+### **Instructions:**
+
+1. Fork this Repository
+    * [fork](https://help.github.com/articles/fork-a-repo/) this repository to your personal github account
+    * [clone](https://help.github.com/articles/cloning-a-repository/) **your** `forked` repository to your local machine.
+    * clean up the code in the `Inventory` class
+    * commit your changes
+    * submit a `pull request` which compares Zipcoder `master` to your `master`.
+3. DO NOT CHANGE THE TEST OR THE ITEM CLASS
+
+# Part 1 - Original Description of the Gilded Rose
+
+Hi and welcome to team Gilded Rose. As you know, we are a small inn
+with a prime location in a prominent city run by a friendly innkeeper
+named Allison. We also buy and sell only the finest
+goods. Unfortunately, our goods are constantly degrading in quality as
+they approach their sell by date. We have a system in place that
+updates our inventory for us. It was developed by a no-nonsense type
+named Leeroy, who has moved on to new adventures. Your task is to add
+the new feature to our system so that we can begin selling a new
+category of items. First an introduction to our system:
+
+- All items have a SellIn value which denotes the number of days we
+  have to sell the item
+- All items have a Quality value which denotes how valuable the item
+  is
+- At the end of each day our system lowers both values for every item
+
+Pretty simple, right? Well this is where it gets interesting:
+
+  - Once the sell by date has passed, Quality degrades twice as fast
+  - The Quality of an item is never negative
+  - "Aged Brie" actually increases in Quality the older it gets
+  - The Quality of an item is never more than 50
+  - "Sulfuras", being a legendary item, never has to be sold or
+    decreases in Quality
+
+Just for clarification, an item can never have its Quality increase
+above 50, however "Sulfuras" is a legendary item and as such its
+Quality is 80 and it never alters.
+
+DO NOT alter the Item class or Items property as those belong to the goblin
+in the corner who will insta-rage and one-shot you as he doesn't
+believe in shared code ownership (you can make the UpdateQuality
+method and Items property static if you like, we'll cover for
+you).
+
+## Part 2 - Add a new item
+
+We have recently signed a supplier of conjured items. This requires an update to our system:
+
+- "Conjured" items degrade in Quality twice as fast as normal items
+
+Feel free to make any changes to the UpdateQuality method and add any
+new code as long as everything still works correctly.
+
+## Rules
+* No more than two nested if statement in a method
+* Don't use the `!` for your if statement
+
+This was "borrowed" from [alexaitken](https://github.com/alexaitken/GildedRose_java) which originated from [Bobby Johnson's Blog](https://iamnotmyself.com/2011/02/13/refactor-this-the-gilded-rose-kata/).