Add Appveyor instructions
+# ~~~ How to use Appveyor ~~~
+# Preconditions: Artifactory with external access and Bintray oss user.
+#
+# = Trigger tests on commits =
+# 1. Create a new project in Appveyor and choose jfrog-cli-go.
+# 2. In project settings, copy the 'Webhook URL' and create a new 'Push events' Webhook in Github.
+#
+# = Configure Artifactory =
+# 1. Create all necessary repositories for tests according to the README.
+# 2. Create a remote Nuget repository in Artifactory:
+# A. Repository Key: choco
+# B. Url: https://chocolatey.org
+# * The test uses Chocolatey package manager to download Gradle Nuget package through Artifactory's cache.
+#
+# = Override credentials in Appveyor in case of a fork =
+# 1. In the project at Appveyor - Go to settings -> Environment.
+# 2. Override 'JFROG_CLI_RT_URL', 'JFROG_CLI_RT_USER' and 'JFROG_CLI_BINTRAY_USER'.
+# 3. Override 'JFROG_CLI_RT_PASSWORD' and 'JFROG_CLI_BINTRAY_APIKEY' with variable encryption.
+
image:
- Visual Studio 2017
