update U8glib links

Fixes #166

Examples/MightyHat/MightyHat.ino

@@ -15,7 +15,7 @@
 #include <SPIFlash.h>    //get it here: https://github.com/lowpowerlab/spiflash
 #include <PString.h>     //easy string manipulator: http://arduiniana.org/libraries/pstring/
 #include <Streaming.h>   //easy C++ style output operators: http://arduiniana.org/libraries/streaming/
-#include "U8glib.h"      //https://bintray.com/olikraus/u8glib/Arduino
+#include "U8glib.h"      //https://github.com/olikraus/U8glib_Arduino/releases
                          //u8g compared to adafruit lib: https://www.youtube.com/watch?v=lkWZuAnHa2Y
                          //drawing bitmaps: https://www.coconauts.net/blog/2015/01/19/easy-draw-bitmaps-arduino/
 //*****************************************************************************************************************************

Examples/OLEDMote/OLEDMote.ino

@@ -31,7 +31,7 @@
 #include <RFM69.h>    //get it here: https://www.github.com/lowpowerlab/rfm69
 #include <SPIFlash.h> //get library from: https://www.github.com/lowpowerlab/spiflash
 #include <LowPower.h> //get library from: https://github.com/lowpowerlab/lowpower
-#include "U8glib.h"   //get library from: https://code.google.com/p/u8glib/
+#include "U8glib.h"   //get library from: https://github.com/olikraus/U8glib_Arduino/releases
 #include <SPI.h>      //included with Arduino IDE (www.arduino.cc)
 
 //****************************************************************************************************************

Examples/SonarMote/SonarMote_Parking_Sound_OLED/SonarMote_Parking_Sound_OLED.ino

@@ -50,7 +50,7 @@
                          //the OLED drawing will cause a visible delay in the LED blinking, nothing much to do about it without complicating the sketch a lot more
 
 #ifdef OLED_ENABLE
-  #include "U8glib.h"   //get library from: https://code.google.com/p/u8glib/
+  #include "U8glib.h"   //get library from: https://github.com/olikraus/U8glib_Arduino/releases
 #endif
 
 #ifdef __AVR_ATmega1284P__