New attempt at copying the libraries.

.travis.yml

   - sudo apt-get install arduino
 before_script:
   # copy TMC and L6470 libraries to arduino dir, as conditional includes do not work in .ino files
-  - cp -r ArduinoAddons/Arduino_1.x.x/libraries/ /usr/share/arduino/libraries/  
+  - sudo cp -r ArduinoAddons/Arduino_1.x.x/libraries/ /usr/share/arduino
  # add U8glib, LiquidCrystal_I2C & LiquidTWI2 libraries 
   - sudo unzip u8glib_arduino_v1.17.zip -d /usr/share/arduino/libraries/
   - cd /usr/share/arduino/libraries/