devel/rubygem-rack-mini-profiler: create port

Profiling toolkit for Rack applications with Rails integration. Client Side
profiling, DB profiling and Server profiling.

WWW: http://miniprofiler.com


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370267 35697150-7ecd-e111-bb59-0022644237b5