JMS #84: Support context.Next() function in Routing layer

closes #84

This should now bring next support to routing handlers.
Show return value of ListenAndServe
Merge pull request #85 from codegangsta/JMS-84

JMS #84: Support context.Next() function in Routing layer
Merge branch '82-showerr' of github.com:hamo/martini into hamo-82-showerr
add route parameter globbing
allow empty globbed parameters
redirect to slash when requesting directory
Added readme documentation
Updated Readme
Merge branch 'static-noslash-redirect' of github.com:icholy/martini into icholy-static-noslash-redirect