Improved android example

examples/android/README.md

@@ -5,6 +5,16 @@ Get libopenxr_loader.so from the Oculus OpenXR Mobile SDK and add it to `example
 https://developer.oculus.com/downloads/package/oculus-openxr-mobile-sdk/
 `examples/android/runtime_libs/arm64-v8a/libopenxr_loader.so`
 
+Also, install either `cargo-apk` (marked as deprecated):
+```sh
+cargo install cargo-apk
+```
+or, install `xbuild` as it supersedes `cargo-apk`. Note that the `--git` is 
+very important here.
+```sh
+cargo install --git https://github.com/rust-mobile/xbuild
+```
+
 ## Run
 Running on Meta Quest can be done with https://github.com/rust-mobile/cargo-apk. 
 ```sh 
@@ -12,10 +22,6 @@ cargo apk run --release
 ```
 But cargo-apk is deprecated in favour of xbuild https://github.com/rust-mobile/xbuild.
 ```sh 
-# Install latest version of xbuild
-cargo install --git https://github.com/rust-mobile/xbuild
-```
-```sh 
 # List devices and copy device string "adb:***"
 x devices
 
@@ -58,4 +64,4 @@ You can use `keytool` like so:
 keytool -genkey -v -keystore my-release-key.keystore -keyalg RSA -keysize 2048 -validity 10000
 ```
 For more information on key signing and why it's so important, check out this article:
-https://developer.android.com/studio/publish/app-signing
+https://developer.android.com/studio/publish/app-signing