Add new testimonial to landing page

1. Pull the latest branch from master
2. Check out a new branch
3. Open the landing-page.js file in the js directory
4. In the array called testimonials add your company as an object.

• Add your company logo in the images > logos directory. Use the relative path for the logo property.
• Add your company name under the company property if and only if the logo does not show the name explicitly
• Add the testimonial under the quote property

5. Submit the PR for review and wait for review
6. Once PR has been reviewed and approved, merge the PR