Update CI scripts.

Former-commit-id: 0af4a8227ea4e3abfd2731659427fd958d7b3aab

.appveyor.yml

@@ -9,7 +9,7 @@ branches:
     - cmake
     - cgal
 environment:
-  BOOST_ROOT: C:/Libraries/boost_1_65_0
+  BOOST_ROOT: C:/Libraries/boost_1_65_1
 install:
   - git submodule update --init --recursive
   - cinstall: python
@@ -35,7 +35,7 @@ build_script:
   - cd tutorial
   - mkdir build
   - cd build
-  - cmake -DLIBIGL_USE_STATIC_LIBRARY=ON -G "Visual Studio 15 2017 Win64" -DBOOST_ROOT=${BOOST_ROOT} ../
+  - cmake -DLIBIGL_USE_STATIC_LIBRARY=ON -G "Visual Studio 15 2017 Win64" ../
   - set MSBuildLogger="C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
   - set MSBuildOptions=/v:m /p:Configuration=Debug /logger:%MSBuildLogger%
   - msbuild %MSBuildOptions% libigl_tutorials.sln

.travis.yml

@@ -1,5 +1,5 @@
 dist: trusty
-sudo: false
+sudo: true
 language: cpp
 cache: ccache
 matrix: