README.md: add instructions on how to build and install eSpeak for Android.

README.md

@@ -2,3 +2,36 @@
 
 This branch contains the files needed to build espeak on the android platform.
 It is derived from the eyes-free project.
+
+## Prerequisits
+
+To build eSpeak for Android, you need to have the following installed and
+configured correctly:
+
+1.  Android SDK
+2.  Android NDK
+3.  Eclipse
+4.  Android Developer Tools (ADT) for Eclipse
+
+## Building
+
+1.  Build the `libttsespeak.so` file by running:
+
+        $ ndk-build
+2.  Open Eclipse.
+3.  Create a new workspace.
+4.  Import the espeak folder as an exising Android project.
+5.  Build the espeak apk within Eclipse.
+
+## Installing
+
+The generated `eSpeakActivity.apk` can be installed like any other apk build
+via eclipse, such as by using the `Run` menu option.
+
+After running, `eSpeakActivity` will download the `espeak-data.zip` file. To
+enable eSpeak, you need to:
+
+1.  go into the Android `Text-to-Speech settings` UI;
+2.  enable `eSpeak TTS` in the `Engines` section;
+3.  select `eSpeak TTS` as the default engine;
+4.  use the `Listen to an example` option to check if everything is working.