Add note to README to update workflow triggers (#128)

Author: vsoch

.github/workflows/install.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CTEST_OUTPUT_ON_FAILURE: 1

.github/workflows/macos.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CTEST_OUTPUT_ON_FAILURE: 1

.github/workflows/standalone.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CPM_SOURCE_CACHE: ${{ github.workspace }}/cpm_modules

.github/workflows/style.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CPM_SOURCE_CACHE: ${{ github.workspace }}/cpm_modules

.github/workflows/ubuntu.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CTEST_OUTPUT_ON_FAILURE: 1

.github/workflows/windows.yml

@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - master
+      - main
   pull_request:
     branches:
       - master
+      - main
 
 env:
   CTEST_OUTPUT_ON_FAILURE: 1