fix osx lua

.travis.yml

@@ -37,9 +37,11 @@ before_install:
   brew install freetype libevent sqlite lua dylibbundler;
   sudo cp -r /usr/local/include/freetype2 ./freetype2;
   sudo cp -r /usr/local/include/event2 ./event2;
+  sudo cp -r /usr/local/include/lua ./lua;
   sudo rm -rf /usr/local/include/*;
   sudo cp -r ./freetype2 /usr/local/include/freetype2;
   sudo cp -r ./event2 /usr/local/include/event2;
+  sudo cp -r ./lua /usr/local/include/lua;
   fi
 
 - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkdir irrlicht ; cd irrlicht ; curl --retry 5 --location https://github.com/moecube/irrlicht/releases/download/test/irrlicht-mycard-mac.tar.gz | tar zfx - ; cp libIrrlicht.a /usr/local/lib/ ; sudo cp -r include /usr/local/include/irrlicht ; cd .. ; fi