Docs: add another example of creating a range type.
The "floatrange" example is a bit too simple because float8mi can be
used without any additional type conversion. Add an example that does
have to account for that, and do some minor other wordsmithing.
Branch
------
REL9_5_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/1dc6f557e7020269436cbf8a66e68bc6e66def0c
Modified Files
--------------
doc/src/sgml/rangetypes.sgml | 53 ++++++++++++++++++++++++++++--------------
1 file changed, 35 insertions(+), 18 deletions(-)
