Update CHANGELOG.md (#421)

* Update CHANGELOG.md

* Update CHANGELOG.md

CHANGELOG.md

@@ -2,10 +2,14 @@
 
 ## Beta Release
 
-- Planned Release Date: End of March, 2017
-- Server Versions Supported: Server v3.7+ is required
+- Release Date: March 29, 2017
+- Server Versions Supported: Server v3.7+ is required, Self-Signed SSL Certificates are not yet supported
 
-Development for the Beta Release is currently in progress, features implemented so far are listed below. 
+Note: If you need an SSL certificate, consider using [Let's Encrypt](https://docs.mattermost.com/install/config-ssl-http2-nginx.html) instead of a self-signed one.
+
+### Highlights
+
+The Beta apps are a work in progress, supported features are listed below. You can become a beta tester by [downloading the Android app](https://play.google.com/store/apps/details?id=com.mattermost.react.native&hl=en) or [signing up to test iOS](https://mattermost-fastlane.herokuapp.com/). 
 
 #### Authentication
 - Email login
@@ -15,23 +19,35 @@ Development for the Beta Release is currently in progress, features implemented
 
 #### Messaging
 - View and send posts in the center channel
+- Automatically load more posts in the center channel when scrolling
 - View and send replies in thread view
 - "New messages" line in center channel (app does not yet scroll to the line)
+- Date separators 
 - @mention autocomplete
 - ~channel autocomplete
 - "User is typing" message
+- Edit and delete posts
+- Flag/Unflag posts
+- Basic markdown (lists, headers, bold, italics, links)
+
+#### Notifications
+- Push notifications
+- In-app notifications when you receive a message in another channel while the app is open
+- Clicking on a push notification takes you to the channel
 
 #### User profiles
 - Status indicators
 - View profile information by clicking on someone's username or profile picture
 
 #### Files
-- Generic thumbnails when files are attached to a post (cannot open the file to view it yet) 
+- File thumbnails for posts with attachments
+- Upload up to 5 images
+- Image previewer to view images when clicked on
 
 #### Channels
 - Channel drawer for selecting channels
 - Bolded channel names for Unreads, and mention jewel for Mentions
-- Unread posts above/below indicator
+- (iOS only) Unread posts above/below indicator
 - Favorite channels (Section in sidebar, and ability to favorite/unfavorite from channel menu)
 - Create new public or private channels
 - Create new Direct Messages (Group Direct Messages are not yet supported) 
@@ -41,9 +57,17 @@ Development for the Beta Release is currently in progress, features implemented
 - Delete channel
 - View people in a channel
 - Add/remove people from a channel
+- Loading screen when opening channels 
 
 #### Settings
-- Blank Account Settings page (no settings have been added yet) 
+- Account Settings > Notifications page
+- About Mattermost info dialog
+- Report a problem link that opens an email for bug reports
 
 #### Teams
 - Switch between teams using "Team Selection" in the main menu (viewing which teams have notifications is not yet supported) 
+
+### Contributors
+
+Many thanks to all our contributors. In alphabetical order:
+- csduarte, dmeza, enahum, hmhealey, it33, jarredwitt, jasonblais, lfbrock, mfpiccolo, saturninoabril, thomchop