Add GitHub workflows (#93)

* add mac workflow

* rename and add windows and ubuntu workflows

* update tests

* update tests

* update travis

.github/workflows/macos.yml

@@ -0,0 +1,16 @@
+name: MacOS
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: macOS-10.14
+    
+    steps:
+    - uses: actions/checkout@v1
+    
+    - name: run tests
+      run: |
+        cmake -Htest -Bbuild/test
+        cmake --build build/test --target test-verbose

.github/workflows/ubuntu.yml

@@ -0,0 +1,23 @@
+name: Ubuntu
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-18.04
+    
+    steps:
+    - uses: actions/checkout@v1
+    
+    - name: install updates
+      run: |
+        wget -O cmake.sh https://cmake.org/files/v3.14/cmake-3.14.0-Linux-x86_64.sh 
+        sudo sh cmake.sh --skip-license --exclude-subdir --prefix=/usr/local
+        export PATH=/usr/local/bin:$PATH
+        cmake --version
+    
+    - name: run tests
+      run: |
+        cmake -Htest -Bbuild/test
+        cmake --build build/test --target test-verbose

.github/workflows/windows.yml

@@ -0,0 +1,16 @@
+name: Windows
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: windows-2019
+    
+    steps:
+    - uses: actions/checkout@v1
+    
+    - name: run tests
+      run: |
+        cmake -Htest -Bbuild/test
+        cmake --build build/test --target test-verbose