Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

Projects/Temp Main/Temp_Pre/Temp_Pre.ino

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+/*     ---------------------------------------------------------
+ *     |  Arduino Experimentation Kit Example Code             |
+ *     |  CIRC-10 .: Temperature :. (TMP36 Temperature Sensor) |
+ *     ---------------------------------------------------------
+ *   
+ *  A simple program to output the current temperature to the IDE's debug window 
+ * 
+ *  For more details on this circuit: http://tinyurl.com/c89tvd 
+ */
+
+//TMP36 Pin Variables
+int temperaturePin = 0; //the analog pin the TMP36's Vout (sense) pin is connected to
+                        //the resolution is 10 mV / degree centigrade 
+                        //(500 mV offset) to make negative temperatures an option
+
+/*
+ * setup() - this function runs once when you turn your Arduino on
+ * We initialize the serial connection with the computer
+ */
+void setup()
+{
+  Serial.begin(9600);  //Start the serial connection with the copmuter
+                       //to view the result open the serial monitor 
+                       //last button beneath the file bar (looks like a box with an antenae)
+}
+ 
+void loop()                     // run over and over again
+{
+ float temperature = getVoltage(temperaturePin);  //getting the voltage reading from the temperature sensor
+ temperature = (temperature - .5) * 100;          //converting from 10 mv per degree with 500 mV offset
+                                                  //to degrees ((volatge - 500mV) times 100)
+ Serial.print(temperature); //printing the result
+ Serial.print(" Celsius  ");
+ Serial.print(getVoltage(temperaturePin));
+ Serial.println(" Volt");
+ delay(1000);                                     //waiting a second
+}
+
+/*
+ * getVoltage() - returns the voltage on the analog input defined by
+ * pin
+ */
+float getVoltage(int pin){
+ return (analogRead(pin) * .004882814); //converting from a 0 to 1023 digital range
+                                        // to 0 to 5 volts (each 1 reading equals ~ 5 millivolts
+}