Add and addtional example code and fix the console output

This commit:
 * Adds an addtional example to the challenge Waypoint: Accessing Objects Properties with Variables
 * Adds the tail to display the console output

Tested locally.
Closes #6112

challenges/01-front-end-development-certification/basic-javascript.json

@@ -3221,6 +3221,8 @@
         "Another use of bracket notation on objects is to use a variable to access a property. This can be very useful for iterating through lists of the object properties or for doing the lookup.",
         "Here is an example of using a variable to access a property:",
         "<blockquote>var someProp = \"propName\";<br>var myObj = {<br>  propName: \"Some Value\"<br >}<br>myObj[someProp]; // \"Some Value\"</blockquote>",
+        "Here is one more:",
+        "<blockquote>var myDog = \"Hunter\";<br>var dogs = {<br>  Fido: \"Mutt\",\n  Hunter: \"Doberman\",\n  Snoopie: \"Beagle\"<br >}<br>var breed = dogs[myDog]; // \"Hunter\"<br>console.log(breed)// \"Doberman\"</blockquote>",
         "Note that we  do <em>not</em> use quotes around the variable name when using it to access the property because we are using the <em>value</em> of the variable, not the <em>name</em>",
         "<h4>Instructions</h4>",
         "Use the <code>playerNumber</code> variable to lookup player <code>16</code> in <code>testObj</code> using bracket notation."
@@ -3240,7 +3242,7 @@
         "var player = testObj;   // Change this Line"
       ],
       "tail": [
-        ""
+        "if(typeof player !== \"undefined\"){(function(v){return v;})(player);}"
       ],
       "solutions": [
         "var testObj = {\n  12: \"Namath\",\n  16: \"Montana\",\n  19: \"Unitas\"\n};\nvar playerNumber = 16;\nvar player = testObj[playerNumber];"