Temperature And Humidity Notifier

#include <Adafruit_DHT.h>
#include "application.h"
#include "LiquidCrystal/LiquidCrystal.h"
#include "Adafruit_DHT/Adafruit_DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT11
int HT = 1;
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal lcd(D0, D1, A2, D3, D4, D5);
void setup() {
  lcd.begin(16,2);
  dht.begin();
  Particle.function("T-H", ReadHT);
  lcd.print("Temp:          F");
}
void loop() {
    if (HT == 1) {
    lcd.setCursor(10,0);
    lcd.print(dht.getTempFarenheit());
    }
    if (HT == 0) {
    lcd.setCursor(10,0);
    lcd.print(dht.getHumidity());
    }
}
int ReadHT(String command) {
    if (command=="Temperature") {
        lcd.setCursor(0,0);
        lcd.print("Temp:          F");
        HT = 1;
    }else
    if (command=="Humidity") {
        lcd.setCursor(0,0);
        lcd.print("Humidity:      %");
        HT = 0;
    }else
    {
        return -1;
    }
}