Remove extraneous space in primary docs for record fields.
Simplify API and fix example.

add simpleSearchWithWithVerb which wraps searchWithVerb and automacially
creates a Connection Manager.
Make Web.Ebay more safe.

* Order the function declarations in the example.
* Allow them to read a bit more intuitively.
* Add module header.
* Minor style updates.
* Bump version to 0.4.
* Parse SearchResponse safely.
* Indicate parsing errors via mzero.

There are still some stray unsafe parsing functions which should be
completely eradicated soon.