README cleanup's

Spell check the README files and remove out of date release notes.
diff --git a/README.distribution b/README.distribution
index fe78fb4..4e2e8ea 100644
--- a/README.distribution
+++ b/README.distribution
@@ -40,7 +40,7 @@
 
 How can we create this table in practice? In some cases, F may have a
 simple expression which allows evaluating its inverse directly.  The
-pareto distribution is one example of this.  In other cases, and
+Pareto distribution is one example of this.  In other cases, and
 especially for matching an experimentally observed distribution, it's
 easiest simply to create a table for F and "invert" it.  Here, we give
 a concrete example, namely how the new "experimental" distribution was