Add osx badge

.github/workflows/osx.yml

@@ -16,9 +16,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Configure
+      - name: Configure, Build, and Test
         uses: threeal/[email protected]
         with:
-          options: CMAKE_Fortran_COMPILER=gfortran-12
+          options: CMAKE_Fortran_COMPILER=gfortran-13
           run-build: true
           run-test: true

README.mkdn

@@ -1,6 +1,7 @@
 # Minimalistic Fortran unit tests with CMake and CTest
 
 ![CMake](https://github.com/dryman/fortran_unit_test/actions/workflows/main.yml/badge.svg)
+![OSX](https://github.com/dryman/fortran_unit_test/actions/workflows/osx.yml/badge.svg)
 
 ## SYNOPSIS