travis build test 10 - adding cgal and appveyor

Former-commit-id: 1e580e1b26d44b46b9552359b2f9a792cf2aacc6

.appveyor.yml

@@ -0,0 +1,19 @@
+version: 1.0.{build}
+os: Visual Studio 2015
+test: off
+clone_folder: C:\projects\libigl
+branches:
+  only:
+    - master
+install:
+  - git submodule update --init --recursive
+  - cinstall: python
+build_script:
+  - echo Running cmake...
+  - cd c:\projects\libigl\tutorial
+  - mkdir build
+  - cd build
+  - cmake -G "Visual Studio 14 2015 Win64"
+  - set MSBuildLogger="C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+  - set MSBuildOptions=/v:m /p:Configuration=Release /logger:%MSBuildLogger%
+  - msbuild %MSBuildOptions% libigl_tutorials.sln

.travis.yml

@@ -36,6 +36,7 @@ matrix:
       script:
         - brew update
         - brew upgrade cmake
+        - brew install cgal
         - git submodule update --init --recursive
         - cd tutorial
         - mkdir build