diff --git a/README.md b/README.md
index 45da35c3197bdaef811ca36be7856ea22b8899ba..537953b83a060c82f991fc8f6038a6520b7733e2 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,18 @@ BigBlueButton
 =============
 BigBlueButton is an open source web conferencing system.  
 
-BigBlueButton supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen.  Instructors can engage remote students with polling, emojis, and breakout rooms.  BigBlueButton can record and playback all content shared in a session.
+BigBlueButton supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen.  Instructors can engage remote students with polling, emojis, multi-user whiteboard, and breakout rooms.  
+
+Presenters can record and playback content for later sharing with others.
 
 We designed BigBlueButton for online learning (though it can be used for many [other applications](http://www.c4isrnet.com/story/military-tech/disa/2015/02/11/disa-to-save-12m-defense-collaboration-services/23238997/)).  The educational use cases for BigBlueButton are
 
-  * One-to-one on-line tutoring
-  * Small group collaboration 
-  * On-line classes
+  * Online tutoring (one-to-one)
+  * Flipped classrooms (recording content ahead of your session)
+  * Group collaboration (many-to-many)
+  * Online classes (one-to-many)
 
-BigBlueButton runs on a Ubuntu 16.04 64-bit server.  If you follow the [installation instructions](http://docs.bigbluebutton.org/install/install.html), we guarantee you will have BigBlueButton installed and running within 30 minutes (or your money back :-).
+You can install on a Ubuntu 16.04 64-bit server.  We provide [bbb-install.sh](https://github.com/bigbluebutton/bbb-install) to let you have a server up and running within 30 minutes (or your money back :-).
 
 For full technical documentation BigBlueButton -- including architecture, features, API, and GreenLight (the default front-end) -- see [http://docs.bigbluebutton.org/](http://docs.bigbluebutton.org/).
 
diff --git a/record-and-playback/core/Gemfile.lock b/record-and-playback/core/Gemfile.lock
index 7e57f74f61fdb9b43d12d8b6b0e973c05a636209..9df1b520eefa2de93e379ff973c697c11debf447 100644
--- a/record-and-playback/core/Gemfile.lock
+++ b/record-and-playback/core/Gemfile.lock
@@ -7,11 +7,11 @@ GEM
     java_properties (0.0.4)
     jwt (2.1.0)
     mini_portile2 (2.3.0)
-    nokogiri (1.8.1)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     open4 (1.3.4)
     redis (4.0.1)
-    rubyzip (1.2.1)
+    rubyzip (1.2.2)
     trollop (2.1.2)
 
 PLATFORMS