Fix typo, add test example

Dancer2::Logger::Capture has no method 'trap', it is 'trapper' (FIXED).
Added an example of a test using Test::PSGI involving
Dancer2::Logger::Capture (this one includes logging in routes, which is
more real-world example as the current one)
reflect changes
Merge branch 'pod/logger_capture'
[#316] Wrapping POD text for readability and editability
reflect change
Merge branch 'pr/wrap_pod_text'
[#316] Minor textual touchups in Tutorial.pod

This commit builds on PR #694 so that the text is already wrapped before
applying this change.  The changes in this commit are minor editorial
changes which help the document flow a bit and correct a couple of typos.
correct changes
Merge branch 'pr/tutorial_pod_textual_touchups'