make http header more informative

crmAttachment.go

 func crmUploadFile(path string) (fileID string, fileInfo crmFileInfo, err error) {
 
 	fileInfo, err = getFileInfo4CRM(path)
-	headers, err := crmUploadFileHTTPHeader(fileInfo)
+	headers, err := crmPrepareAttachmentHTTPHeader(fileInfo)
 	data, err := crmFileDataString(path, fileInfo)
 	url := crmUploadAttachmentURL()
 	resp, err := postRAW([]byte(data), url, headers)
 	return attach.ID, err
 }
 
-//crmUploadFileHTTPHeader   when uploading a file, we need its mime, auth header, etc.
-func crmUploadFileHTTPHeader(fileInfo crmFileInfo) (headers map[string]string, err error) {
+//crmPrepareAttachmentHTTPHeader   when uploading a file, we need its mime, auth header, etc.
+func crmPrepareAttachmentHTTPHeader(fileInfo crmFileInfo) (headers map[string]string, err error) {
 	headers = map[string]string{}
 	headers["Authorization"] = crmAuthHeader()
 	headers["Accept"] = "application/json"
 	json.Unmarshal([]byte(aInfo), &result)
 	return
 }
+
+func crmDownloadAttachment(fileID, saveAs string) (err error) {
+	return nil
+}

crmAttachment_test.go

 	log.Println(e)
 }
 
-func TestPatchAttachmentInfo(t *testing.T) {
-	//crmPatchAttachmentInfo("591e5f7b9463d7147")
-	crmCreateAttachment("abc")
-}
-
 func TestDecodeJsonResponse(t *testing.T) {
 	msg := `
 {"id":"591e55398345683ee","name":"static_qr_code_without_logo.png","deleted":false,"type":"image\/png"