Update logo

README.md

@@ -15,7 +15,7 @@
 The Warp 10 Platform is designed to collect, store and manipulate sensor data. Sensor data are ingested as sequences of measurements (also called time series). The Warp 10 Platform offers the possibility for each measurement to also have spatial metadata specifying the geographic coordinates and/or the elevation of the sensor at the time of the reading. Those augmented measurements form what we call Geo Time Series™ (GTS).
 > [Warp10.io](https://warp10.io)
 
-![Warp 10 logo](https://cdn-images-1.medium.com/max/800/0*ajCaRkg8gvcsZtXl.png)
+![Warp 10 logo](https://blog.senx.io/wp-content/uploads/2018/10/warp10bySenx.png)
 
 ## How to use this image