Increasing the time out in Travis from 10 to 15 minutes when installing Mono.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

.travis.yml

@@ -15,7 +15,7 @@ addons:
     - g++-4.8
 
 install:
-  - source build/InstallMono.sh
+  - travis_wait 15 source build/InstallMono.sh
   - build/InstallNugets.sh  
   - if [ "$TRAVIS_OS_NAME" = "linux" ] && [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
   - if [ "$TRAVIS_OS_NAME" = "linux" ]; then PREMAKE=build/premake5-linux-64; else PREMAKE=build/premake5-osx; fi