Add travis

.travis.yml

@@ -0,0 +1,32 @@
+language: bash
+matrix:
+  include:
+    - name: Linux Ubuntu 16 - g++ 5
+      os: linux
+      dist: xenial
+      compiler: gcc
+    - name: Linux Ubuntu 18 - g++ 7
+      os: linux
+      dist: bionic
+      compiler: gcc
+    - name: Linux Ubuntu 18 - clang 7
+      os: linux
+      dist: bionic
+      compiler: clang
+      env:
+        - CXX=clang++
+    - name: MacOSX 10.14 - XCode 11
+      os: osx
+      osx_image: xcode11
+      compiler: clang
+    - name: Windows - Visual Studio 2017
+      os: windows
+      install:
+        # git bash changes the codepage to 65001 which breaks waf's msvc tool,
+        # so we run the configure step in powershell using the 850 codepage
+        - powershell "chcp 850; python waf configure"
+install:
+  - python waf configure
+script:
+  - python waf build -v
+  - python waf --run_tests