fix rain unit

app/assets/scripts/views/home.js

@@ -237,7 +237,7 @@ var Home = React.createClass({
                 axisLineMax={1}
                 axisLineVal={0.28}
                 axisLineMin={0}
-                unit=' L/m² / 5 Min'
+                unit=' L / m²'
               />
 
               <SensorWidget