Implemented https://github.com/eclipse/xacc/issues/506

- Added yml files for MacOS and Linux CI

- Linked the status to README
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

.github/workflows/ci-linux.yml

+name: "Linux CI"
+
+on:
+  push:
+    branches: [ master, xacc-devel ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: "Linux CI"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Create Build Environment
+        run: cmake -E make_directory build
+      
+      - name: Install dependencies
+        run: sudo apt-get -y update && sudo apt-get install -y --no-install-recommends ninja-build libssl-dev python3 libpython3-dev python3-pip libblas-dev liblapack-dev
+      
+      - name: Configure
+        working-directory: build/
+        run: cmake -GNinja $GITHUB_WORKSPACE -DXACC_BUILD_TESTS=TRUE -DXACC_BUILD_EXAMPLES=TRUE
+    
+      - name: Build
+        working-directory: build/
+        run: cmake --build . --target install
+      
+      - name: Test
+        working-directory: build/
+        run: ctest --output-on-failure
\ No newline at end of file

.github/workflows/ci-mac.yml

+name: "macOS CI"
+
+on:
+  push:
+    branches: [ master, xacc-devel ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: macos-latest
+    name: "Mac CI"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      
+      - name: Setup XCode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: latest-stable
+      
+      - name: Create Build Environment
+        run: cmake -E make_directory build
+      
+      - name: Install ninja
+        run: brew install ninja
+      
+      - name: Install dependencies
+        run: brew install python3 openssl curl
+      
+      - name: Configure
+        working-directory: build/
+        run: export SDKROOT="`xcrun --show-sdk-path`" && cmake -GNinja $GITHUB_WORKSPACE -DXACC_BUILD_TESTS=TRUE -DXACC_BUILD_EXAMPLES=TRUE
+      
+      - name: Build
+        working-directory: build/
+        run: export SDKROOT="`xcrun --show-sdk-path`" && cmake --build . --target install
+      
+      - name: Test
+        working-directory: build/
+        run: export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$HOME/.xacc/lib && ctest --output-on-failure
\ No newline at end of file

README.md

 ![XACC](docs/assets/xacc_full_logo.svg)
 
-|  master | xacc-devel |
-|:-------|:-------|
-|[![pipeline status](https://code.ornl.gov/qci/xacc/badges/master/pipeline.svg)](https://code.ornl.gov/qci/xacc/commits/master) | [![pipeline status](https://code.ornl.gov/qci/xacc/badges/xacc-devel/pipeline.svg)](https://code.ornl.gov/qci/xacc/commits/xacc-devel) |
+[![Linux CI](https://github.com/eclipse/xacc/actions/workflows/ci-linux.yml/badge.svg?branch=xacc-devel)](https://github.com/eclipse/xacc/actions/workflows/ci-linux.yml)
+[![Mac CI](https://github.com/eclipse/xacc/actions/workflows/ci-mac.yml/badge.svg?branch=xacc-devel)](https://github.com/eclipse/xacc/actions/workflows/ci-mac.yml)
 
 ## Language and Hardware Independent Quantum Programming Framework
 XACC is an extensible compilation framework for hybrid quantum-classical computing architectures.