Improve workflow and badges. (#78)

.github/workflows/linux-clang.yaml

-name: Linux Clang - Build & tests
+name: Linux Clang
 
 on:
   - pull_request
+  - push
 
 jobs:
   build:

.github/workflows/linux-emscripten.yaml

-name: Linux Emscripten - Build
+name: Linux Emscripten
 
 on:
   - pull_request
+  - push
 
 jobs:
   build:

.github/workflows/linux-gcc.yaml

-name: Linux GCC - Build & tests
+name: Linux GCC
 
 on:
   - pull_request
+  - push
 
 jobs:
   build:

.github/workflows/mac-clang.yaml

+name: MacOS Clang
+
+on:
+  - pull_request
+  - push
+
+jobs:
+  build:
+    name: MacOS Clang
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: seanmiddleditch/gha-setup-ninja@master
+      - name: Build
+        run: >
+          mkdir build;
+          cd build;
+          cmake ..
+          -DCMAKE_CXX_COMPILER=clang++
+          -DFTXUI_BUILD_TESTS=ON;
+          cmake --build . --config Release;
+
+      - name: Tests
+        if: ${{ matrix.config.test }}
+        run: >
+          cd build;
+          ./tests

.github/workflows/windows-msvc.yaml

+name: Windows MSVC
+
+on:
+  - pull_request
+
+jobs:
+  build:
+    name: Windows MSVC
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: seanmiddleditch/gha-setup-ninja@master
+      - uses: ilammy/msvc-dev-cmd@v1
+      - name: Build
+        run: >
+          mkdir build;
+          cd build;
+          cmake ..
+          -DCMAKE_CXX_COMPILER="cl"
+          -DFTXUI_BUILD_TESTS=ON;
+          cmake --build . --config Release;
+
+      - name: Tests
+        if: ${{ matrix.config.test }}
+        run: >
+          cd build;
+          ./tests.exe

README.md

 # FTXUI
 
-[![continuous-integration][badge.continuous-integration]][continuous-integration]
 [![issues][badge.issues]][issues]
 [![license][badge.license]][license]
 [![contributors][badge.contributors]][contributors]
 
-[badge.continuous-integration]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/continuous-integration.yaml/badge.svg
 [badge.issues]: https://img.shields.io/github/issues-raw/arthursonzogni/FTXUI
 [badge.license]: https://img.shields.io/github/license/arthursonzogni/FTXUI?color=black
 [badge.contributors]: https://img.shields.io/github/contributors/arthursonzogni/FTXUI?color=blue
-[continuous-integration]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/continuous-integration.yaml
+
 [issues]: https://github.com/ArthurSonzogni/FTXUI/issues
 [license]: http://opensource.org/licenses/MIT
 [contributors]: https://github.com/ArthurSonzogni/FTXUI/graphs/contributors
@@ -18,7 +16,6 @@
 
 A simple C++ library for terminal based user interface.
 
-
 ## Demo:
 ![Demo image](./examples/component/homescreen.gif)
 
@@ -31,6 +28,25 @@ A simple C++ library for terminal based user interface.
  * No dependencies.
  * Cross platform (mostly). Linux (main target), Windows (experimental), Mac.
 
+## Operating systems
+- [![linux-gcc][badge.linux-gcc]][link.linux-gcc]
+- [![linux-clang][badge.linux-clang]][link.linux-clang]
+- [![linux-emscripten][badge.linux-emscripten]][link.linux-emscripten]
+- [![windows-msvc][badge.windows-msvc]][link.windows-msvc]
+- [![mac-clang][badge.mac-clang]][link.mac-clang]
+
+[badge.linux-gcc]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-gcc.yaml/badge.svg?branch=master
+[badge.linux-clang]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-clang.yaml/badge.svg?branch=master
+[badge.linux-emscripten]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-emscripten.yaml/badge.svg?branch=master
+[badge.windows-msvc]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/windows-msvc.yaml/badge.svg?branch=master
+[badge.mac-clang]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/mac-clang.yaml/badge.svg?branch=master
+
+[link.linux-gcc]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-gcc.yaml
+[link.linux-clang]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-clang.yaml
+[link.linux-emscripten]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/linux-emscripten.yaml
+[link.windows-msvc]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/windows-msvc.yaml
+[link.mac-clang]: https://github.com/ArthurSonzogni/FTXUI/actions/workflows/mac-clang.yaml
+
 ## Example:
 ~~~cpp
   vbox({