Add config file example and ignore the real config file

.gitignore

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 bin
 pkg
+
+config.yaml

config.example.yaml

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+# Settings to connect to the Grafana instance.
+grafana:
+    # Base URL for the Grafana instance.
+    base_url: https://grafana.company.tld
+    # Grafana API key. This is generated by Grafana, as explained at
+    # http://docs.grafana.org/http_api/auth/#create-api-token
+    api_key: apiauthkey
+
+# Settings to interact with the Git repository. Currently only SSH repos are
+# supported.
+git:
+    # SSH URL to the repository. The user part (usually "git@" at the beginning
+    # of the URL) must be excluded.
+    url: "git.company.tld:it/grafana-dashboards.git"
+    # Path to the private key used to authenticate on Git. It is recommended to
+    # use a passphraseless key.
+    private_key: /etc/grafana-dashboard-manager/id_rsa_nopasswd
+    # Path to the directory where the git repository lies on the disk. If the
+    # directory doesn't exist, it will be created and the repository will be
+    # cloned into it.
+    clone_path: /tmp/grafana-dashboards
+
+# Settings to configure the Git webhook. Currently only GitLab webhooks are
+# supported.
+webhook:
+    # Interface the webhook will listen on.
+    interface: 127.0.0.1
+    # Port the webhool will listen on.
+    port: 8080
+    # Path on which the webhook will live. Full webhook URL will be
+    # interface:port/path.
+    path: /gitlab-webhook
+    # Secret GitLab will use to authenticate the requests.
+    secret: mysecret