[moserial] add note to README about stropts.h build problem

[Michael J. Chudobiak <mjc src gnome org>]

commit d917a9e81e9a2559a6ea29365c7d43226606e8fb
Author: Michael J. Chudobiak <mjc avtechpulse com>
Date:   Wed Aug 17 14:02:15 2011 -0400

    add note to README about stropts.h build problem

 README |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/README b/README
index e69de29..eb4a226 100644
--- a/README
+++ b/README
@@ -0,0 +1,14 @@
+Build issues
+============
+
+If you see this error:
+src/SerialConnection.c:31:21: fatal error: stropts.h: No such file or directory
+
+then either:
+
+1. sudo touch /usr/include/stropts.h
+
+or
+
+2. patch your posix.vapi file as described at
+http://bugzilla.gnome.org/show_bug.cgi?id=656690#c3