Update README.md

README.md

@@ -56,7 +56,13 @@ After the above steps, you will have a modified `arcore_client.aar` with device
 The official library has a minimum SDK version of Android 7.0 (Nougat). See [@kenfast's research for installing on pre-7.0](https://github.com/tomthecarrot/arcore-for-all/issues/70#issue-257430177).
 
 ## Unity Build Instructions
-Coming soon
+1. Connect your Android device to your computer using a USB cable.You may see a prompt asking you to confirm that you wish to enable USB debugging on the device. If so, click OK.
+2. In Unity, open the Build Settings from the top menu (File > Build Settings).
+3. Click Add Open Scenes to add the Main scene to the list of scenes that will be built.Click Build And Run.
+4. You will be prompted to choose where to build your .apk. A good place to do this is in a dedicated builds directory in the root of your project.
+5. Create a directory called "Builds" in the root of your project (not within your Assets directory, but at the same level as it).Select that directory as the location to build to.
+6. In the text input field marked Save As, enter "Android" and click Save.
+7. Unity will now create an .apk file called "Android" in the “Builds” folder, build that file to your device and run it.
 
 ## Credit
 Original library by [Google](https://developers.google.com/ar/develop/java/getting-started)