Removed unused files, changed example names

examples/SHT_SIMPLE/SHT_SIMPLE.ino

@@ -0,0 +1,16 @@
+#include <AirGradient.h>
+AirGradient ag = AirGradient();
+
+void setup(){
+  Serial.begin(9600);
+  ag.TMP_RH_Init(0x44); //check for SHT sensor with address 0x44
+}
+
+void loop(){
+  TMP_RH result = ag.periodicFetchData();
+  Serial.print("Humidity: ");
+  Serial.print(result.rh_char);
+  Serial.print(" Temperature: ");
+  Serial.println(result.t_char);
+  delay(5000);
+}