README.md: improve headlines
diff --git a/README.md b/README.md
index be2b64d..1d032e4 100644
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@@ -25,7 +25,7 @@
 ...
 ```
 
-## In Detail
+## In detail
 
 ### 1. Provisioning the SIM
 
@@ -89,6 +89,8 @@
 Kc. The applet triggers a refresh, which causes the SIM to do a new Location
 Update with the new IMSI.
 
+## Notes
+
 ### What if the SMS gets lost?
 
 Both the old and the new pseudo IMSI entry exist in the HLR.