Added gas estimation

app/components/simple-voting/AddPoll.js

@@ -102,17 +102,20 @@ const AddPoll = withFormik({
     const { addPoll } = PollManager.methods;
     const currentBlock = await getBlockNumber();
     const endTime = currentBlock + (oneDayinBlocks * 90);
-    addPoll(
-      endTime,
-      singleChoiceDef(description, ['YES', 'NO'])
-    )
-      .send()
+
+    const toSend = addPoll(endTime, singleChoiceDef(description, ['YES']));
+    toSend.estimateGas()
+      .then(gasEstimated => {
+        console.log("addPoll gas estimated: "+gasEstimated);
+        return toSend.send({gas: gasEstimated + 1000});
+      })
       .then(res => {
         console.log('sucess:', res);
       })
       .catch(res => {
         console.log('fail:', res);
-      })
+      });
+
   }
 })(StyledForm)