Summary: Added Mobile App product.

Why It Matters: This change adds a new way for people to use Textellent. It lets them use the service on their phones.

What Changed:

• Added a new product section called "Mobile App" under "Everything You Need to Text at Scale."
• The "Mobile App" section describes how the app works on iOS and Android, with features like push notifications and quick-reply templates.
• Added a "Learn More" link for the Mobile App.
• Added a new heading "OUR TESTIMONIALS" above "Read Our Blog".