website: include mailing list call-to-action

everywhere there is a work-in-progress note, added a call to
join the mailing list, so we can notify them, instead of having them
check back

Change-Id: I2b427c730c64830cf02ad55bb551494444bb7d8b
diff --git a/content/community/mailing-lists.md b/content/community/mailing-lists.md
index 54f020b..1a71542 100644
--- a/content/community/mailing-lists.md
+++ b/content/community/mailing-lists.md
@@ -4,7 +4,5 @@
 = yaml =
 
 
-* [Vanadium Discuss mailing list](https://groups.google.com/a/v.io/forum/#!forum/vanadium-discuss) - Mailing list for discussion of Vanadium-related topics (e.g. questions, changes, feature requests).
-
-
-
+* [Vanadium Discuss mailing list](https://groups.google.com/a/v.io/forum/#!forum/vanadium-discuss) - Mailing list for discussion of Vanadium-related topics (e.g. questions, changes, feature requests).  
+We will also send announcements of new versions and sample apps.
diff --git a/content/syncbase/api-reference.md b/content/syncbase/api-reference.md
index 2c5a254..6cd44d3 100644
--- a/content/syncbase/api-reference.md
+++ b/content/syncbase/api-reference.md
@@ -6,5 +6,6 @@
 
 {{# helpers.warning }}
 ## Work in Progress!
-Stay tuned, we are currently working on polishing the Syncbase API.
-{{/ helpers.warning }}
\ No newline at end of file
+Stay tuned, we are currently working on polishing the Syncbase API. Please join
+our [mailing list](/community/mailing-lists.html) for updates.
+{{/ helpers.warning }}
diff --git a/content/syncbase/first-app.md b/content/syncbase/first-app.md
index 81067f7..575b53b 100644
--- a/content/syncbase/first-app.md
+++ b/content/syncbase/first-app.md
@@ -7,8 +7,8 @@
 {{# helpers.warning }}
 ## Work in Progress!
 We're actively working on finishing up the Syncbase API and implementation.
-The code below compiles, but may not execute successfully.
-If you'd like to actually run this code, please check back with us in a few weeks.
+The code below compiles, but may not execute successfully. Please join
+our [mailing list](/community/mailing-lists.html) for updates.
 {{/ helpers.warning }}
 
 # Introduction
@@ -281,4 +281,4 @@
 Build a collaborative Todo app
 </a>
 
-[Tutorial]: /syncbase/tutorial/introduction.html
\ No newline at end of file
+[Tutorial]: /syncbase/tutorial/introduction.html
diff --git a/content/syncbase/quickstart.md b/content/syncbase/quickstart.md
index 7c9ce17..9a03bdb 100644
--- a/content/syncbase/quickstart.md
+++ b/content/syncbase/quickstart.md
@@ -7,8 +7,8 @@
 {{# helpers.warning }}
 ## Work in Progress!
 We're actively working on finishing up the Syncbase API and implementation.
-The code below compiles, but may not execute successfully.
-If you'd like to actually run this code, please check back with us in a few weeks.
+The code below compiles, but may not execute successfully. Please join
+our [mailing list](/community/mailing-lists.html) for updates.
 {{/ helpers.warning }}
 
 {{# helpers.hidden }}
diff --git a/content/syncbase/tutorial/introduction.md b/content/syncbase/tutorial/introduction.md
index 01a334d..2c0823c 100644
--- a/content/syncbase/tutorial/introduction.md
+++ b/content/syncbase/tutorial/introduction.md
@@ -10,7 +10,8 @@
 We are currently working on writing a detailed step-by-step tutorial for our
 canonical Todos example app.
 Meanwhile, feel free to use the simpler [Your First App] tutorial or
-checkout the code for the Todos app at https://github.com/vanadium/todos
+checkout the code for the Todos app at https://github.com/vanadium/todos, and
+please join our [mailing list](/community/mailing-lists.html) for updates.
 {{/ helpers.warning }}
 
 [Your First App]: /syncbase/first-app.html