diff --git a/.hgignore b/.hgignore
index 4ccdb51..f9bdb94 100644
--- a/.hgignore
+++ b/.hgignore
@@ -1,3 +1,5 @@
+QtC*
+
 syntax: glob
 .DS_Store
 ./bin
diff --git a/README b/README
new file mode 100644
index 0000000..a45665e
--- /dev/null
+++ b/README
@@ -0,0 +1,4 @@
+Since the Normative Types specification is not yet at Public Working Draft level,
+any implementation must be considered alpha. The implementations of helpers under
+this repo must be considered alpha level.
+