created and tested server side water control

app/server/startup.js

@@ -1,6 +1,12 @@
 if (Meteor.isServer) {
   Meteor.startup(function() {
     // code to run on server at startup
+
+    return Meteor.methods({
+      clearLog: function() {
+        return SensorData.remove({});
+      }
+    });
   });
 
   // Global API configuration
@@ -15,11 +21,13 @@ if (Meteor.isServer) {
     post: function() {
       SensorData.insert({
         temperatureValue: parseFloat(this.bodyParams.temperatureValue),
-	humidityValue: parseFloat(this.bodyParams.humidityValue),
+        humidityValue: parseFloat(this.bodyParams.humidityValue),
         owner: this.bodyParams.owner,
         created_at: new Date()
       });
       return [];
     }
   });
+
+  
 }