added a new course sectionto include javascript content. Fix issue #5

Author: helgakern

README.md

@@ -38,6 +38,9 @@ This is a video that explains a little bit how to start collaborating with the p
     * [How to Make a Custom Website from Scratch using WordPress (Theme Development) by freeCodeCamp ](https://youtu.be/KibbYf9avko)
     * [Professional WordPress Theme & Plugin Development](https://www.udemy.com/course/photoshop-psd-to-wordpress-theme-development-from-scratch/)
     * [WordPress Plugin Development](https://youtu.be/mm9aQiLEa10)
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+* **JavaScript**
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