Feature/windows ci (#76)

* close with params

* ...

* different generator

* core size = 1

* disable more tests to get something working on windows

* try to enable another test on windows

* enable all OS

* set proper version of linux

* another try

* try again with just env variables

* Revert "core size = 1"

This reverts commit 29af74bba6.

* add windows and mac

* Revert "close with params"

This reverts commit 6bb00b6788.

.travis.yml

@@ -1,17 +1,31 @@
-language: cpp
-dist: xenial
-
-compiler:
-  - gcc
-  - clang
-os:
-  - linux
-  - osx
+language: bash
 
 matrix:
-  exclude:
-    # GCC fails on recent Travis OSX images.
-    - compiler: gcc
-      os: osx
+  include:
+    # macOS
+    - os: osx
+      compiler: clang
+      script: make test
 
-script: python test/run.py
+    # Linux
+    - os: linux
+      dist: xenial
+      script: python test/run.py
+      env:
+        - CC=clang 
+        - CXX=clang++
+
+    - os: linux
+      dist: xenial
+      script: python test/run.py
+      env:
+        - CC=clang 
+        - CXX=clang++
+
+    # Windows
+    - os: windows
+      env:
+        - CMAKE_PATH="/c/Program Files/CMake/bin"
+      script: 
+        - export PATH=$CMAKE_PATH:$PATH
+        - python test/run.py