Export include dirs for users am: f1db9c86a4 am: 7f0667c45a am: 04c8e238e2
am: 326ac1cbe4

Change-Id: If3b901389ad1bfc9115ff7a47a1c83c2705db455
diff --git a/Android.bp b/Android.bp
index a6e232d..9fc9f57 100644
--- a/Android.bp
+++ b/Android.bp
@@ -21,6 +21,7 @@
         "src/zopfli/zlib_container.c",
         "src/zopfli/zopfli_lib.c",
     ],
+    export_include_dirs: ["src"],
 
     target: {
         windows: {