Add uploading section to README.

README.md

@@ -1,8 +1,8 @@
 # Gradle Plugin for Datadog Android SDK
 
-> This plugin is used to upload your Proguard/Dexguard/R8 mapping files to Datadog to get a complete RUM Error Tracking experience.
+> This plugin is used to upload your Proguard/Dexguard/R8 mapping files and NDK symbol files to Datadog to get a complete RUM Error Tracking experience.
 
-Once your mapping file are uploaded, any error/crash reported through RUM will have a deobfuscated stacktrace, enabling an easy diagnosis of the root cause of the error.
+Once your mapping file are uploaded, any error/crash reported through RUM will have a deobfuscated and symbolicated stacktrace, enabling an easy diagnosis of the root cause of the error.
 
 ## Getting Started
 
@@ -16,6 +16,20 @@ plugins {
 }
 ```
 
+### Uploading
+
+To upload your mapping files to Datadog, run the `uploadMapping[Variant]` task in your Android project as part of your build or after your build, for example:
+
+```bash
+./gradlew  uploadMappingRelease
+```
+
+Similarly, to upload NDK symbols, run the `uploadNdkSymbolFiles[Variant]` task in your Android project. For example:
+
+```bash
+./gradlew uploadNdkSymbolFilesRelease
+```
+
 ### Configuration
 
 You can configure the plugin by adding the following block at the end of your `build.gradle` file.