Added CircleCI config (#2)

Author: galvesribeiro

.circleci/config.yml

@@ -0,0 +1,31 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: microsoft/dotnet
+    steps:
+      - checkout
+      - run:
+          name: restore
+          command: dotnet restore
+      - run:
+          name: build
+          command: dotnet build -c Release
+      - deploy:
+          name: Publish NuGet
+          command: |
+            if [ "$CIRCLE_BRANCH" != "release" ]; then
+              echo -e "\e[33m Branch does not publish -- exit!"
+              exit
+            fi
+            . ./.circleci/utils.sh
+            if [ "$NUGET_API_KEY" == "" ]; then
+              echo NUGET_API_KEY environment variable not defined.
+              exit 1
+            fi
+            PACKAGE_VERSION=0.1.$CIRCLE_BUILD_NUM
+            dotnet pack /p:PackageVersion=$PACKAGE_VERSION -o ../../ -c release --include-symbols
+            dotnet nuget push *.nupkg -k $NUGET_API_KEY -s https://www.nuget.org/api/v2/package
+            print_title "git tag"
+            git tag $PACKAGE_VERSION
+            git push --tags

.circleci/utils.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+print_title() {
+	echo -e "\e[36m ---- $1 ---- \e[39m"
+}