Support joiner with simple value.

This should close GH#63
Merge pull request #64 from melmothx/topic/gh-63

Support joiner with simple value.
Add reset method to Template::Flute::Pager.
Fix typo in Template::Flute::Filter::JsonVar's POD.
Add Jeff Boes to acknowledgements.
Bump up version number.
Prepare Changes and README files for upcoming release.