Add .travis.yml for continuous integration

.travis.yml

@@ -0,0 +1,13 @@
+language: cpp
+compiler:
+  - gcc
+  - clang
+install:
+  - sudo apt-get update
+  - sudo apt-get install libglew-dev
+script:
+  - echo "CXX="$CXX
+  - echo "CC="$CC
+  - cmake . -G "Unix Makefiles" #-DCMAKE_CXX_FLAGS=-Werror
+  - make -j8
+  - sudo make install