easy dev doc update (openemr#3685)

CONTRIBUTING.md

@@ -122,7 +122,30 @@ You will need a "local" version of OpenEMR to make changes to the source code. T
       ```sh
       docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools list-snapshots'
       ```
-12. Developer tools to turn on and turn off support for multisite feature.
+12. Developer tools to send/receive snapshots (via capsules) that are created above in item 11.
+    - Here is how to grab a capsule from the docker, which can then store or share with friends.
+        - List the capsules:
+          ```sh
+          docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools list-capsules'
+          ```
+        - Copy the capsule from the docker to your current directory (using `example.tgz` below):
+          ```sh
+          docker cp $(docker ps | grep _openemr | cut -f 1 -d " "):/snapshots/example.tgz .
+          ```
+    - Here is how to send a capsule into the docker.
+        - Copy the capsule from current directory into the docker (using `example.tgz` below):
+          ```sh
+          docker cp example.tgz $(docker ps | grep _openemr | cut -f 1 -d " "):/snapshots/
+          ```
+        - Restore from the new shiny snapshot (using `example` below):
+          ```sh
+          docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools restore example'
+          ```
+        - Ensure run upgrade to ensure will work with current version OpenEMR:
+          ```sh
+          docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools upgrade 5.0.2'
+          ```
+13. Developer tools to turn on and turn off support for multisite feature.
     - Turn on support for multisite:
       ```sh
       docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools enable-multisite'
@@ -131,17 +154,17 @@ You will need a "local" version of OpenEMR to make changes to the source code. T
       ```sh
       docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c '/root/devtools disable-multisite'
       ```
-13. Xdebug and profiling is also supported for PHPStorm.
+14. Xdebug and profiling is also supported for PHPStorm.
     - Firefox install xdebug helper add on (configure for PHPSTORM)
     - PHPStorm Settings->Language & Frameworks->PHP->Debug
         - Start listening
         - Untoggle "Break at first line in PHP scripts"
         - Untoggle both settings that start with "Force Break at first line..."
      - Make sure port 9000 is open on your host operating system
      - Profiling output can be found in /tmp directory in the docker
-14. When you're done, it's best to clean up after yourself with `docker-compose down -v`
+15. When you're done, it's best to clean up after yourself with `docker-compose down -v`
     - If you don't want to build from scratch every time, just use `docker-compose down` so your next `docker-compose up` will use the cached volumes.
-15. [Submit a PR](https://github.com/openemr/openemr/compare) from your fork into `openemr/openemr#master`!
+16. [Submit a PR](https://github.com/openemr/openemr/compare) from your fork into `openemr/openemr#master`!
 
 We look forward to your contribution...