Update README for Dev Preview 2

+ link to @thestr4ng3r's "ARCore Patch" repo

README.md

@@ -1,14 +1,20 @@
 # ARCore for All
 Google ARCore for "unsupported" Android devices
 
-## See Experimental Branch
-This branch is unlikely to work on most devices. 
-**Please check out the [service mod](https://github.com/tomthecarrot/arcore-for-all/tree/service-mod) branch** of this repo to help us develop the latest experiment to bring ARCore to more devices. Thanks!
-
 ## Summary
-Google's ARCore developer preview for Android is awesome. Unfortunately, my Android phone (Samsung GS8+) is not on the supported list, and apps built with ARCore exit at start on my device. However, its hardware actually can run ARCore!
+Google's ARCore developer preview for Android is awesome. Unfortunately, my Android phone (Samsung GS8+) was not on the supported list, and apps built with ARCore exit at start on my device. However, its hardware actually can run ARCore!
+
+I modified the Android library to strip the ARCore device check, and ARCore started working on the device.
 
-I modified the Android library to strip the ARCore device check, and ARCore is now working on the device.
+## Developer Preview 2
+ARCore has been updated to Preview 2 by Google. More devices are now supported. Another project on GitHub, [ARCore Patch](https://github.com/thestr4ng3r/arcore-patch), aims to extend unofficial device support for the new version. 
+
+## Developer Preview 1
+Please see below for research on the first preview build.
+
+### See Experimental Branch
+This branch is unlikely to work on most devices. 
+**Please check out the [service mod](https://github.com/tomthecarrot/arcore-for-all/tree/service-mod) branch** of this repo to help us develop the latest experiment to bring ARCore to more devices. Thanks!
 
 ## Android Installation
 In your Android project, simply replace the Google-provided `arcore_client.aar` with the one in this repo, and voilà! ARCore on any Android device.