Add new scene controller with touch display example.

Upgraded RF24 to latest version which supports SoftSPI. 
Added DigitalIO and UTFT libraries to support the new example.
Fix problem reported in RelayWithButtonActuator example.

libraries/UIPEthernet/README

@@ -1,4 +1,4 @@
-This is UIPEthernet version 1.01
+This is UIPEthernet version 1.07
 
 An plugin-replacement of the stock Arduino Ethernet library for ENC28J60 shields and breakout boards. Full support for persistent (streaming) TCP-connections and UDP (Client and Server each), ARP, ICMP, DHCP and DNS. 
 Just include 'UIPEthernet.h' instead of 'Ethernet.h' and use all your code written for the stock Arduino Ethernet lib!
@@ -26,7 +26,9 @@ On a Mac, you will want to create a folder named "libraries" in in the "Document
     $ cd ~/Documents/Arduino/libraries
     $ git clone https://github.com/ntruchsess/arduino_uip UIPEthernet
     
-Or you download the zipped version of the library from https://github.com/ntruchsess/arduino_uip/archive/master.zip, create a directory [path to Arduino distribution]\libraries\UIPEthernet and put the contents of the zip-file there.
+Or you download the zipped version of the library from https://github.com/ntruchsess/arduino_uip/releases, and copy the contained directory UIPEthernet to [path to Arduino distribution]\libraries\UIPEthernet.
+
+If you are running Arduino-IDE 1.5.x use release-version 1.57 or checkout branch 'Arduino_1.5.5'
 
 Additional information can be found on the Arduino website: http://www.arduino.cc/en/Hacking/Libraries