Update README.mkdn

Add bugs section
diff --git a/README.mkdn b/README.mkdn
index e44319a..1780b2f 100644
--- a/README.mkdn
+++ b/README.mkdn
@@ -29,3 +29,10 @@
 ---------
     Go to root of your local copy of CyanogenMod's source code
     ./cm_crowdin_sync.py
+
+Bugs
+----
+ - The script only commits for projects in caf.xml. We need to have a unified project.xml that contains AOSP base
+   files (when necessary) and all projects on Crowdin.
+ - cm_caf.xml can only be generated once.
+ - When there are no translation updates, the connector will simply fail.