Add Patch method to ProviderClient
diff --git a/provider_client.go b/provider_client.go
index 9264355..152a091 100644
--- a/provider_client.go
+++ b/provider_client.go
@@ -246,6 +246,8 @@
 		return []int{201, 202}
 	case method == "PUT":
 		return []int{201, 202}
+	case method == "PATCH":
+		return []int{200, 204}
 	case method == "DELETE":
 		return []int{202, 204}
 	}
@@ -299,6 +301,24 @@
 	return client.Request("PUT", url, *opts)
 }
 
+func (client *ProviderClient) Patch(url string, JSONBody interface{}, JSONResponse *interface{}, opts *RequestOpts) (*http.Response, error) {
+	if opts == nil {
+		opts = &RequestOpts{}
+	}
+
+	if v, ok := (JSONBody).(io.ReadSeeker); ok {
+		opts.RawBody = v
+	} else if JSONBody != nil {
+		opts.JSONBody = JSONBody
+	}
+
+	if JSONResponse != nil {
+		opts.JSONResponse = JSONResponse
+	}
+
+	return client.Request("PATCH", url, *opts)
+}
+
 func (client *ProviderClient) Delete(url string, opts *RequestOpts) (*http.Response, error) {
 	if opts == nil {
 		opts = &RequestOpts{}