(core) lightly freshen the core readme, mentioning roadmap and forums etc.

Summary: This is a documentation update, and version bump on grist-core.

Test Plan: No code changes.

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2982

NOTICE.txt

@@ -1,5 +1,5 @@
 Grist Software
-Copyright 2014-2020 Grist Labs Inc.
+Copyright 2014-2021 Grist Labs Inc.
 
 This product includes software developed at
 Grist Labs Inc. (https://www.getgrist.com/).

README.md

@@ -13,6 +13,11 @@ here, combined with business-specific software designed to scale it to many user
 etc.
 
 If you are looking to use Grist in the cloud, head on over to [getgrist.com](https://www.getgrist.com).
+If you are curious about where Grist is going heading,
+see [our roadmap](https://github.com/gristlabs/grist-core/projects/1), drop a
+question in [our forum](https://community.getgrist.com),
+or browse [our extensive documentation](https://support.getgrist.com).
+
 
 ## Opening and editing a Grist document locally
 
@@ -44,14 +49,19 @@ yarn install
 yarn run build:prod
 yarn run install:python
 yarn start
-# unauthenticated grist client available at http://localhost:8484
-# unauthenticated grist api available at http://localhost:8484/api/
+# grist client available at http://localhost:8484
+# grist api available at http://localhost:8484/api/
 ```
 
-Then you can use the Grist client, or the API. You cannot (yet) edit Grist documents
-in place on your file system. All imported/created documents will appear in the `docs`
-subdirectory.
+Then you can use the Grist client, or the API. You can view and edit Grist documents
+throught the client and the API.  All imported/created documents will appear in the `docs`
+subdirectory.  You cannot (yet) edit Grist documents in place on your file system.
 
+Grist does not have a login system built in.  To activate one, you can configure Grist
+to talk to an identity provider such as Auth0 using
+[SAML](https://github.com/gristlabs/grist-core/blob/main/app/server/lib/SamlConfig.ts).
+For running on your own computer, this isn't necessary, but it is important if you are
+self-hosting Grist for use by a team.
 
 ## Why Open Source?
 

app/server/lib/SamlConfig.ts

@@ -15,7 +15,7 @@
  * Note that the code is based on the example at https://github.com/Clever/saml2
  *
  * Expected environment variables:
- *    env GRIST_SAML_SP_HOST=https://grist.tigerglobal.com
+ *    env GRIST_SAML_SP_HOST=https://<your-domain>
  *        Host at which our /saml/assert endpoint will live; identifies our application.
  *    env GRIST_SAML_SP_KEY
  *        Path to file with our private key, PEM format.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "grist-core",
-  "version": "0.7.2",
+  "version": "0.7.3",
   "license": "Apache-2.0",
   "description": "Grist is the evolution of spreadsheets",
   "homepage": "https://github.com/gristlabs/grist-core",