Added a paragraph about signing up to our mailing list to the home page

Author: dangerworm

_layouts/default.html

@@ -14,7 +14,7 @@
             <a name="top"></a>
             <div class="row">
                 <div class="main-logo">
-                    <img src="./images/keyboard-green.png">
+                    <a href="index.html"><img src="./images/keyboard-green.png"></a>
                 </div>
                 <div class="main-logo-title">
                     <h1 class="cover-heading">CODEWITH<span id="small-screen-break"><br /></span><span id="suffix" class="typed-suffix">US</span></h1>

_site/contact.html

@@ -137,7 +137,7 @@
             <a name="top"></a>
             <div class="row">
                 <div class="main-logo">
-                    <img src="./images/keyboard-green.png">
+                    <a href="index.html"><img src="./images/keyboard-green.png"></a>
                 </div>
                 <div class="main-logo-title">
                     <h1 class="cover-heading">CODEWITH<span id="small-screen-break"><br /></span><span id="suffix" class="typed-suffix">US</span></h1>

index.html

@@ -14,7 +14,7 @@ <h1>Welcome to CodeWith!</h1>
     <div class="col-sm-9 col-md-10">
         <p class="intro-text">CodeWith is about free adult coding tuition for everyone. We offer a friendly space where
             anyone, from complete beginners to accomplished software engineers, can get together, learn and share
-            a passion for coding. For more information, see our <a href="about.html">about page</a>.
+            a passion for coding. For more information, check out our <a href="about.html">about page</a>.
         </p>
     </div>
 </div>
@@ -37,6 +37,20 @@ <h1>Welcome to CodeWith!</h1>
     </div>
 </div>
 
+<div class="row intro">
+    <div class="col-sm-3 col-md-2 text-center">
+        <p class="intro-icon">
+            <a href="contact.html"><span class="fas fa-3x fa-envelope"></span></a>
+        </p>
+    </div>
+    <div class="col-sm-9 col-md-10">
+        <p class="intro-text"><strong>Stay up to date!</strong> There will be a lot of annoucements over the coming
+            weeks and the best way to hear about what we're doing is to sign up to our mailing list. There's a form
+            where you can give us your details on our <a href="contact.html">contact page</a>.
+        </p>
+    </div>
+</div>
+
 <div class="row intro">
     <div class="col-sm-3 col-md-2 text-center">
         <p class="intro-icon">