restore travis

.travis.yml

@@ -23,6 +23,20 @@ matrix:
             - libboost-filesystem-dev
           sources: 
             - ubuntu-toolchain-r-test
+    - env: CXX=g++-4.9 CC=gcc-4.9
+      addons:
+        apt:
+          packages:
+            - g++-4.9
+            - libjpeg8-dev
+            - libpng-dev
+            - libasound2-dev
+            - alsa-utils
+            - alsa-oss
+            - libx11-dev
+            - libxft-dev
+          sources: 
+            - ubuntu-toolchain-r-test
             
   allow_failures:		
     - env: CXX=clang++-3.8 CC=clang-3.8
@@ -57,4 +71,5 @@ before_script :
 
 script:
   - cmake -G"Unix Makefiles" .. -DENABLE_JPEG=ON -DENABLE_PNG=OFF -DBUILD_NANA_DEMOS=ON -DENABLE_AUDIO=OFF -DCMAKE_FIND_BOOST_FILESYSTEM=OFF -DINCLUDE_EXPERIMENTAL_DEMOS=ON
+   
   - make