Update Wippersnapper.h

Author: brentru

src/Wippersnapper.h

@@ -63,7 +63,7 @@
 #endif
 
 #define WS_VERSION                                                             \
-  "1.0.0-beta.16" ///< WipperSnapper app. version (semver-formatted)
+  "1.0.0-beta.15" ///< WipperSnapper app. version (semver-formatted)
 
 // Reserved Adafruit IO MQTT topics
 #define TOPIC_IO_THROTTLE "/throttle" ///< Adafruit IO Throttle MQTT Topic
@@ -357,4 +357,4 @@ class Wippersnapper {
 
 extern Wippersnapper WS; ///< Global member variable for callbacks
 
-#endif // ADAFRUIT_WIPPERSNAPPER_H
+#endif // ADAFRUIT_WIPPERSNAPPER_H