Document supported platforms of env-var provider

Signed-off-by: Bence Hornák <[email protected]>

Author: bencehornak

providers/env-var/README.md

@@ -2,6 +2,19 @@
 
 Environment Variables provider allows you to read feature flags from the [process's environment](https://en.wikipedia.org/wiki/Environment_variable).
 
+## Supported platforms
+
+| Supported | Platform             | Supported versions                                                             |
+|-----------|----------------------|--------------------------------------------------------------------------------|
+| ❌         | Android              |                                                                                |
+| ✅         | JVM                  | JDK 11+                                                                        |
+| ✅         | Native               | Linux x64                                                                      |
+| ❌         | Native               | [Other native targets](https://kotlinlang.org/docs/native-target-support.html) |
+| ✅         | Javascript (Node.js) |                                                                                |
+| ❌         | Javascript (Browser) |                                                                                |
+| ❌         | Wasm                 |                                                                                |
+
+
 ## Installation
 
 ```xml

providers/env-var/build.gradle.kts

@@ -15,7 +15,7 @@ kotlin {
         compilations.all {
             compileTaskProvider.configure {
                 compilerOptions {
-                    jvmTarget.set(JvmTarget.JVM_21)
+                    jvmTarget.set(JvmTarget.JVM_11)
                 }
             }
         }