Display suggestion is now configurable.

Commit 665772bda213e838b3c092075a386ee3b846b0be forces to display only
suggestion for the request's method (this was not the case before).

This commit allows to configure this behaviour: it keeps the current behaviour
but also allows to use the other behaviour where the suggestion is displayed
for each request method (as it was before).
Merge pull request #55 from oligot/suggestion-method

Display suggestion is now configurable