Merge pull request #45 from pantheon-systems/CMSO-1352

[ CMSO-1352 ] - Update Secrets Readme for EA

.gitignore

@@ -3,3 +3,4 @@ vendor
 .phpunit.result.cache
 reports
 /.idea
+/.DS_Store

README.md

@@ -104,9 +104,35 @@ In some cases it will be necessary to have different values for the secret when
 
 **Note**: If the secret does not exist, there is no secret environment to override, and you will get an error.
 
+```mermaid
+classDiagram
+OrgzaniationSecretAPIPassword --> SiteSecretAPIPassword 
+SiteSecretAPIPassword  --> IntegratedComposerAPIPassword : no overrides
+OrgzaniationSecretAPIPassword : string name apipassword
+OrgzaniationSecretAPIPassword : string value ball00n
+SiteSecretAPIPassword : Inherits value from Org 
+SiteSecretAPIPassword : No Overrides
+IntegratedComposerAPIPassword: value ball00n
+
+OrgzaniationSecretOverrideExample --> SiteSecretOverrideExample
+SiteSecretOverrideExample --> SiteSecretOverrideExampleDev : default value
+SiteSecretOverrideExample --> SiteSecretOverrideExampleTest : env override value
+SiteSecretOverrideExample --> SiteSecretOverrideExampleLive : env override value
+OrgzaniationSecretOverrideExample : string name apipassword
+OrgzaniationSecretOverrideExample : string value ball00n
+SiteSecretOverrideExample : Inherits value from Org 
+SiteSecretOverrideExample : No Site Overrides
+SiteSecretOverrideExampleDev: value ball00n
+SiteSecretOverrideExampleDev: defaultValue()
+SiteSecretOverrideExampleTest: value ball00n2
+SiteSecretOverrideExampleTest: overridden()
+SiteSecretOverrideExampleLive: value ball00n3
+SiteSecretOverrideExampleLive: overridden()
+```
+
 ## The life of a secret
 
-When a given runtime (e.g. Integrated Composer runtime or the application runtime) fetches secrets for a given site (and env), the process will be as follows:
+When a given runtime (e.g. Integrated Composer or an environment php runtime) fetches secrets for a given site (and env), the process will be as follows:
 
 - Fetch secrets for site (of the given type and scopes).
 
@@ -149,7 +175,7 @@ Secrets Manager requires the following:
 
 - A Pantheon account
 - A site that uses [Integrated Composer](https://docs.pantheon.io/guides/integrated-composer) and runs PHP >= 8.0
-- Terminus 3
+- Terminus 3.0+
 
 ### Installation