Update OWNER files and add README.
Bug: 169130113
Test: n/a
Change-Id: I7385053f40e30aa1300b869a4c06d3f5e9c8bdcb
diff --git a/OWNERS b/OWNERS
index 0563948..e0d79df 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,10 +1,18 @@
-adamhe@google.com
augale@google.com
-dsandler@google.com
hackbod@google.com
-joannechung@google.com
-juliacr@google.com
-lpeter@google.com
narayan@google.com
svetoslavganov@google.com
+lpeter@google.com
+# Autofill
+adamhe@google.com
+joannechung@google.com
tymtsai@google.com
+# PackageWatchdog
+gavincorkery@google.com
+# Notification
+dsandler@google.com
+juliacr@google.com
+# TextClassifier
+toki@google.com
+tonymak@google.com
+licha@google.com
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1fb1f22
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+ExtServices module
+=============================
+
+### Introduction
+ExtServices is an updatable Mainline module that contains the logic used by Android framework
+components such as storage cache, autofill, textclassifier, package watchdog, notifications and
+notification ranking that run continually. For the new features or bug fixes of these platform
+defined services above or a new added platform service, it will provide more flexibility and
+benefits by updating ExtServices in a more frequent cycle than a platform release cycle.
+
+### Development (internal)
+Before you start to develop on ExtServices, please read
+[go/smart-os-extservices](go/smart-os-extservices) to get the guideline.
+
+
+### Other resources
+- [Public ExtServices document](https://source.android.com/devices/architecture/modular-system/extservices)
\ No newline at end of file
