Fix up Travis CI

... it doesn't autodetect that it needs to run autoreconf
Also add gtest package.

.travis.yml

@@ -8,11 +8,14 @@ addons:
     packages:
     - gcc-4.8
     - g++-4.8
+    - libgtest-dev
 
 # use gcc-4.8
 install:
 - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
 
+script: autoreconf -f -i -s && ./configure && make && make check
+
 compiler:
 - clang
 - gcc