Add 2018 Google I/O video

README.md

@@ -33,6 +33,10 @@ Have something to add or change? Open a [pull request](https://github.com/barbea
 
 - [Navipedia](https://gssc.esa.int/navipedia/index.php/Main_Page) by ESA - An online reference for GNSS systems and data processing.
 
+### Videos
+
+- [*How to get one-meter location-accuracy from Android devices (Google I/O '18)*](https://www.youtube.com/watch?v=vywGgSrGODU) by Google - Discussion of calculating position from raw GNSS measurements, including carrier phase measurements, as well as Wi-Fi RTT.
+
 ### Articles
 
 - [*Dual-frequency GNSS on Android devices*](https://medium.com/@sjbarbeau/dual-frequency-gnss-on-android-devices-152b8826e1c) by Sean Barbeau - Discussion of dual-frequency GNSS support on Android, including screenshots showing device support for dual-frequency in GPSTest.
@@ -55,4 +59,4 @@ Have something to add or change? Open a [pull request](https://github.com/barbea
 - QZSS
   - [Supported devices (official)](https://qzss.go.jp/en/usage/products/list.html#smartphones-tablet-computers)
 - WAAS
-  - [Real-time status (official)](https://www.nstb.tc.faa.gov/RT_WaasSatelliteStatus.htm)
+  - [Real-time status (official)](https://www.nstb.tc.faa.gov/RT_WaasSatelliteStatus.htm)