Further refinement to home page

app/views/home/index.html.erb

@@ -1,4 +1,4 @@
-<h1 class="govuk-heading-l">Welcome</h1>
+<h1 class="govuk-heading-l">Welcome to the ESDA Build</h1>
 <p  class="govuk-body">
   This is a prototype tool that demonstrates how a web application could be used by users
   to build an ESDA submission in a number of steps and via web forms.
@@ -8,11 +8,11 @@
 </p>
 <ul class="govuk-list govuk-list--bullet">
   <li>
-    The entry at each step is provided with it's own form. This give a place where text can
-    be added to described to the user what information is required at each step.
+    The entry at each step is provided with it's own form. This provides a place where text can
+    be added to described the information required, that is specific to the current step.
   </li>
   <li>
-    Validation can be applied at each step. This give immediate (on submission) feedback
+    Validation can be applied at each step. This gives immediate feedback
     on any problems with the input. That feedback will be specific to the current step
     so will be easier to understand.
   </li>
@@ -24,6 +24,10 @@
     The tool is hosted on a single web host. That means version control is easier.
     When the central host app is updated, the update applies to all users.
   </li>
+  <li>
+    Also problems are concentrated at the host, so there is only one system that needs
+    fixing in most cases.
+  </li>
   <li>
     Submissions are stored in a central database so can be shared as needed, or passed
     to additional services (the data marketplace for example) as required.