Update README: document known discrepancies

README.md

@@ -102,6 +102,17 @@ $ ./bootstrap debug
 $ dialyzer ebin -Wunmatched_returns -Werror_handling -Wrace_conditions -Wunderspecs
 </pre>
 
+The following discrepancies are known and safe to ignore:
+<pre>
+rebar_templater.erl:249: The call rebar_templater:consult(
+                                Cont1::erl_scan:return_cont(),'eof',
+                                Acc::[any()])
+                         contains an opaque term as 1st argument when terms
+                         of different types are expected in these positions
+rebar_utils.erl:144: Call to missing or unexported function escript:foldl/3
+rebar_utils.erl:165: The created fun has no local return
+</pre>
+
 It is **strongly recommended** to check the code with
 [Tidier](http://tidier.softlab.ntua.gr:20000/tidier/getstarted).  
 Select all transformation options and enable **automatic**