Refactor Sensors to remove publish responsibility and instead return values. Add Screen class to output to OLED screen.

Screen.cpp

@@ -0,0 +1,29 @@
+#include "Screen.h"
+
+Screen::Screen(Sensors *sensors, int sdaPin, int sclPin){
+	_sensors = sensors;
+	_sdaPin = sdaPin;
+	_sclPin = sclPin;
+}
+
+void Screen::setup() {
+	Wire.begin(_sdaPin, _sclPin);
+	_screen.begin(SSD1306_SWITCHCAPVCC, 0x3C);
+	_screen.clearDisplay();
+	_screen.setTextWrap(false);
+	_screen.setTextColor(WHITE);
+}
+
+void Screen::writeTemperature(){
+	_screen.setTextSize(1);
+	_screen.setCursor(0, 0);
+	_screen.println("Temperature:");
+	_screen.setTextSize(2);
+	_screen.setCursor(0, 10);
+	_screen.println(_sensors->getTemperature());
+}
+
+void Screen::update(){
+	writeTemperature();
+	_screen.display();
+}