Fix typos.

README.md

@@ -30,16 +30,16 @@ please report any missing or incorrect information to help others make the
 switch more easily.
 
 - `v2.x.y` are stable and any API breaking changes are considered bugs. There's
-  like not going to be very many releases of the `v2` line.
+  like not going to be very many releases of the `v2` line once `v3` is stable.
 
 - `v3.0.0-beta?` are pre-releases of `v3.0.0`. We predict that one more
-  breaking change might happen: the string handling is confusing to some of the
+  breaking changes might happen: the string handling is confusing to some of the
   maintainers and the default encoding is inconsistent (and will likely be made
   consistent).
 
   For codes that either use `std::string` when dealing with strings, or that
-  don't use strings with HDF5, we don't currently have any additional breaking
-  changes planned for 3.0.0.
+  don't use strings with HDF5 at all, we don't currently have any additional
+  breaking changes planned for 3.0.0.
 
 ### Design
 - Simple C++-ish minimalist interface