Completed 2-initials.js exercise

Author: anosidium

Sprint-1/1-key-exercises/2-initials.js

@@ -6,6 +6,9 @@ let lastName = "Johnson";
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
 let initials = ``;
+initials += firstName.charAt(0);
+initials += middleName.charAt(0);
+initials += lastName.charAt(0);
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn