Add ESP8266HTTPClient.h include to ion file

Author: squix78

examples/MetOfficeDemo/oneDayForecaster.ino

@@ -30,12 +30,13 @@
 *   You will need to get an API key and location id from the Met Office, as described in the
 *   client, and add them to settings.h together with wifi details and an OTA password if you want
 *   to use that.
-*   
+*
 */
 
 #include <Arduino.h>
 #include <SD.h>
 #include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
 #include <ArduinoOTA.h>
 #include <ESP8266mDNS.h>
 #include <Adafruit_GFX.h>

examples/PlaneSpotterDemo/PlaneSpotterDemo.ino

@@ -24,6 +24,7 @@ See more at http://blog.squix.ch
 */
 #include <Arduino.h>
 #include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
 #include <Ticker.h>
 #include <JsonListener.h>
 #include <ArduinoOTA.h>
@@ -44,7 +45,7 @@ See more at http://blog.squix.ch
 
 /**************
  * Required Libraries:
- * - Weather Station by Daniel Eichhorn 
+ * - Weather Station by Daniel Eichhorn
  * - WifiManager by tzapu
  * - ESP8266 OLED Driver by Daniel Eichhorn, Fabrice Weinberg
  * - Json Streaming Parser by Daniel Eichhorn

examples/WorldClockDemo/WorldClockDemo.ino

@@ -24,6 +24,7 @@ See more at https://blog.squix.org
 */
 
 #include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
 #include <Ticker.h>
 #include <JsonListener.h>
 #include <SSD1306Wire.h>