ADD: added gcc-arm-none-eabi compiler to travie script

.travis.yml

@@ -3,4 +3,15 @@ language: c
 #install:
 compiler: gcc
 
-script: make clean && make all
+before script:
+  ## Install mainline ARM toolchain.  gcc-arm-none-eabi is available
+  ## in Ubuntu >= 14.04, but this external PPA is needed for 12.04.
+  ## Install srecord
+  - if [ ${BUILD_ARCH:-0} = arm-aapcs ] ; then
+      sudo add-apt-repository -y ppa:terry.guo/gcc-arm-embedded &&
+      sudo apt-get -qq update &&
+      sudo apt-get -qq install gcc-arm-none-eabi srecord &&
+      arm-none-eabi-gcc --version ;
+    fi
+	
+script: make clean && make all UBUNTU_1404_QT4=1