[gmime] Updated README.md

[Jeffrey Stedfast <fejj src gnome org>]

commit 0b50737b73f89d087f9f7c0f5977dfa459502b33
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Fri Mar 3 16:27:00 2017 -0500

    Updated README.md

 README.md |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/README.md b/README.md
index 9a77348..1d92ebc 100644
--- a/README.md
+++ b/README.md
@@ -190,8 +190,7 @@ the next step is learning how to traverse the MIME tree using GMime.
 
 ### Traversing a MimeMessage
 
-The `MimeMessage.Body` is the top-level MIME entity of the message. Generally, it will either be a
-`TextPart` or a `Multipart`.
+The top-level MIME entity of the message will generally either be a `GMimePart` or a `GMimeMultipart`.
 
 As an example, if you wanted to rip out all of the attachments of a message, your code might look
 something like this: