Doc updates.

README.md

@@ -5,10 +5,7 @@ An example heart rate monitor app for Android and MacOS using [git.wow.st/gmp/bl
 The MacOS implementation uses a Core Bluetooth binding created by
 [NSWrap](https://git.wow.st/gmp/nswrap). On Android, Martijn van Welie's
 [Blessed](https://github.com/weliem/blessed-android) library is used to
-simplify access to the Bluetooth Low-Energy hardware. If you need to
-re-compile the Blessed library for any reason, you can use `go generate`
-from the `depjars` directory. To do that, you will need to have `gradle`,
-an Android SDK, and who knows what else installed on your machine.
+simplify access to the Bluetooth Low-Energy hardware.
 
 ## MacOS:
 
@@ -30,3 +27,8 @@ cd hrm/hrm
 gogio -target android .
 adb install -r hrm.apk
 ```
+
+Java code for the Android implementation are pre-packaged in jar files.
+If you want to, you can re-compile these dependencies by running `go
+generate` from the `depjars` directory. You will need to have `gradle`,
+an Android SDK, and who knows what else installed on your machine.