Add comments

.gitignore

@@ -4,3 +4,4 @@ node_modules/
 dist/ffnm.min.js.map
 package-lock.json
 dist/.DS_Store
+src/.#core.js

src/core.js

@@ -12,6 +12,7 @@ document.addEventListener('DOMContentLoaded', () => {
     //===
     // FUNCTIONS
     //===
+
     /**
      * Method that validates syntax and reports.
      * return - Bool
@@ -42,6 +43,10 @@ document.addEventListener('DOMContentLoaded', () => {
         }).every(event => event);
     }
 
+    /**
+     * Method add events click
+     * return void
+     */
     function addEventClick() {
     }