new pictures for open doors & closed doors

source/index.html.haml

@@ -50,7 +50,7 @@
     .col-md-3.col-xs-6
       3.
       %a(href="invite-everyone")
-        =img("/images/main-i.png")
+        =img("/images/invite.png")
         Invite everyone to the conversation
     .col-md-3.col-xs-6
       4.

source/invite-everyone.html.haml

@@ -9,6 +9,7 @@
       %li SVN(the only way to make a patch was to give someone write access on the repo
)
       %li Not using pull/merge requests
       %li Each department has its own set of tools
+    =img("/images/closed-doors.png")
   .col-md-6
     %p Open doors:
@@ -16,14 +17,8 @@
       %li Open repository, documentation & issue tracker
       %li Chat in shared channels
       %li Open source parts of your code
-.row.pictures
-  .col-md-5
-    =img("/images/I0.png")
-  .col-md-1
-    <br/><br/><br/><br/><br/><br/>→
-  .col-md-5
-    =img("/images/I1.png")
+    =img("/images/open-doors.png")
 %h3 Howto