Port copy changes from #23 mockup review

Author: nienn

readthedocs-theme/templates/readthedocs/homepage.html

@@ -14,7 +14,7 @@
 
           <div class="column seven wide computer nine wide tablet sixteen wide mobile">
             <h1 class="ui header massive">
-              <span class="ui header">Continuous documentation for technical projects</span>
+              <span class="ui header">Push your docs, <br>we'll do the rest</span>
             </h1>
             <div class="ui basic vertical padded huge segment">
               <p>
@@ -23,7 +23,7 @@ <h1 class="ui header massive">
             </div>
 
             <div>
-              <a href="https://docs.readthedocs.io/page/intro/getting-started-with-sphinx.html" class="ui button large secondary gradient fade">Start your docs</a>
+              <a href="https://docs.readthedocs.io/page/intro/getting-started-with-sphinx.html" class="ui button large secondary gradient fade">Get started!</a>
               <a href="./product.html" class="ui button large secondary basic">Learn more</a>
             </div>
 
@@ -61,23 +61,23 @@ <h2 class="ui header">How it works</h2>
                   <img src="/theme/img/infographic-01.png"/> 
                 </div>
                 <p>
-                  Write your documentation easily, using .md or .rst, directly in your own IDE, as you work on what maters: your project.
+                  Write your documentation easily, using Markdown or reStructuredText, directly in your own IDE, as you work on what matters: your project.
                 </p>
               </div>
               <div class="column center aligned">
                 <div class="ui image">
                   <img src="/theme/img/infographic-02.png"/>
                 </div>
                 <p>
-                  Upload your work to your favorite source code repository hosting service. We support GitHub, GitLab, BitBucket and more.
+                  Read the Docs watches your repository and rebuilds your documentation any time you make a change.
                 </p>
               </div>
               <div class="column center aligned">
                 <div class="ui image">
                   <img src="/theme/img/infographic-03.png"/>
                 </div>
                 <p>
-                  Setup your account with Read the Docs, add a .config file to tell us your preferences and we'll do the rest!
+                  Setup your account with Read the Docs, add a <code>.readthedocs.yaml</code> file to set the configuration, and we'll do the rest!
                 </p>
               </div>
 
@@ -102,11 +102,11 @@ <h2 class="ui header">How it works</h2>
 
             <div class="ui basic vertical huge segment">
               <p>
-                We generate, host and manage your documentation versions for you, outputting both html and pdf formats. 
-                Whenever you push code, we'll build your docs.
+                We generate HTML, PDF, and EPUB formats for your project, and host and manage documentation versions for you.
+                  Whenever you push code, we'll build your docs.
               </p>
               <p>
-                <big>It Just works.</big>
+                <big>Get your docs online in 5 minutes.</big>
               </p>
             </div>