calculator changes commit

readme.md

@@ -13,7 +13,7 @@ An online age calculator calculates age and date of birth by adding and subtract
 
 ## Usage
 * Add the shortcode `[ci_age_calculator]` to your page, post or sidebar.
-* Add the following code: `<?php display_ci_age_calculator(); ?>` to your template where you would like the Age Calculator to appear.
+* Or add the following code: `<?php display_ci_age_calculator(); ?>` to your template where you would like the Age Calculator to appear.
 
 ## Libraries in Use
 1. https://mathjs.org/