update test_help to config properly turn natural language option
update test_help to config properly turn natural language option

Last versions of Turn don't monkey patch MiniTest to setup
the natural language option. Here is an
[example](https://github.com/TwP/turn/blob/master/try/test_autorun_minitest.rb#L3).

This patches the following behaviour:

    $ rake test:units
    `<top (required)>': undefined method `use_natural_language_case_names='
    for MiniTest::Unit:Class (NoMethodError)

gcourtemanche/rails,koic/rails,illacceptanything/illacceptanything,xlymian/rails,flanger001/rails,odedniv/rails,vassilevsky/rails,matrinox/rails,ngpestelos/rails,yhirano55/rails,stefanmb/rails,tgxworld/rails,rbhitchcock/rails,kirs/rails-1,fabianoleittes/rails,georgeclaghorn/rails,jeremy/rails,fabianoleittes/rails,georgeclaghorn/rails,bogdanvlviv/rails,shioyama/rails,rafaelfranca/omg-rails,marklocklear/rails,MichaelSp/rails,mechanicles/rails,kirs/rails-1,arunagw/rails,Erol/rails,rossta/rails,tjschuck/rails,richseviora/rails,EmmaB/rails-1,travisofthenorth/rails,pvalena/rails,illacceptanything/illacceptanything,fabianoleittes/rails,yahonda/rails,kachick/rails,mathieujobin/reduced-rails-for-travis,yasslab/railsguides.jp,yahonda/rails,vipulnsward/rails,Vasfed/rails,prathamesh-sonpatki/rails,utilum/rails,arunagw/rails,georgeclaghorn/rails,Sen-Zhang/rails,yalab/rails,notapatch/rails,stefanmb/rails,notapatch/rails,bogdanvlviv/rails,kenta-s/rails,mechanicles/rails,eileencodes/rails,MSP-Greg/rails,EmmaB/rails-1,illacceptanything/illacceptanything,gauravtiwari/rails,vassilevsky/rails,rafaelfranca/omg-rails,Erol/rails,mohitnatoo/rails,flanger001/rails,elfassy/rails,arjes/rails,yawboakye/rails,rails/rails,illacceptanything/illacceptanything,gavingmiller/rails,pvalena/rails,joonyou/rails,xlymian/rails,riseshia/railsguides.kr,Envek/rails,brchristian/rails,mathieujobin/reduced-rails-for-travis,vipulnsward/rails,voray/rails,maicher/rails,arjes/rails,utilum/rails,elfassy/rails,palkan/rails,Envek/rails,samphilipd/rails,sergey-alekseev/rails,deraru/rails,starknx/rails,kmayer/rails,Sen-Zhang/rails,Edouard-chin/rails,eileencodes/rails,pvalena/rails,yawboakye/rails,assain/rails,samphilipd/rails,tjschuck/rails,Spin42/rails,kachick/rails,baerjam/rails,untidy-hair/rails,gavingmiller/rails,voray/rails,hanystudy/rails,marklocklear/rails,kddeisz/rails,koic/rails,ledestin/rails,starknx/rails,shioyama/rails,tgxworld/rails,betesh/rails,untidy-hair/rails,Envek/rails,sealocal/rails,lcreid/rails,rossta/rails,voray/rails,coreyward/rails,esparta/rails,georgeclaghorn/rails,shioyama/rails,88rabbit/newRails,deraru/rails,starknx/rails,iainbeeston/rails,notapatch/rails,yawboakye/rails,yahonda/rails,illacceptanything/illacceptanything,tjschuck/rails,assain/rails,prathamesh-sonpatki/rails,notapatch/rails,Erol/rails,mtsmfm/rails,yasslab/railsguides.jp,lcreid/rails,illacceptanything/illacceptanything,richseviora/rails,rails/rails,kmayer/rails,Stellenticket/rails,pschambacher/rails,Vasfed/rails,illacceptanything/illacceptanything,printercu/rails,hanystudy/rails,yasslab/railsguides.jp,mijoharas/rails,richseviora/rails,lcreid/rails,deraru/rails,yhirano55/rails,aditya-kapoor/rails,elfassy/rails,bogdanvlviv/rails,yalab/rails,tgxworld/rails,bradleypriest/rails,hanystudy/rails,printercu/rails,iainbeeston/rails,Envek/rails,ngpestelos/rails,schuetzm/rails,amoody2108/TechForJustice,iainbeeston/rails,utilum/rails,gfvcastro/rails,illacceptanything/illacceptanything,travisofthenorth/rails,brchristian/rails,riseshia/railsguides.kr,mohitnatoo/rails,lcreid/rails,baerjam/rails,ledestin/rails,betesh/rails,esparta/rails,gfvcastro/rails,matrinox/rails,tjschuck/rails,utilum/rails,rossta/rails,palkan/rails,illacceptanything/illacceptanything,yalab/rails,pvalena/rails,gauravtiwari/rails,Stellenticket/rails,sealocal/rails,bolek/rails,kenta-s/rails,untidy-hair/rails,yahonda/rails,flanger001/rails,joonyou/rails,pschambacher/rails,jeremy/rails,arunagw/rails,kamipo/rails,aditya-kapoor/rails,gcourtemanche/rails,samphilipd/rails,BlakeWilliams/rails,kamipo/rails,prathamesh-sonpatki/rails,kaspth/rails,MSP-Greg/rails,palkan/rails,betesh/rails,assain/rails,kenta-s/rails,tijwelch/rails,illacceptanything/illacceptanything,ttanimichi/rails,sergey-alekseev/rails,tgxworld/rails,aditya-kapoor/rails,xlymian/rails,bradleypriest/rails,felipecvo/rails,gauravtiwari/rails,BlakeWilliams/rails,MichaelSp/rails,travisofthenorth/rails,illacceptanything/illacceptanything,vipulnsward/rails,ttanimichi/rails,kirs/rails-1,BlakeWilliams/rails,eileencodes/rails,mtsmfm/railstest,yalab/rails,Edouard-chin/rails,printercu/rails,untidy-hair/rails,fabianoleittes/rails,bolek/rails,gcourtemanche/rails,gfvcastro/rails,kaspth/rails,lucasmazza/rails,bolek/rails,illacceptanything/illacceptanything,travisofthenorth/rails,yhirano55/rails,yasslab/railsguides.jp,deraru/rails,odedniv/rails,rails/rails,schuetzm/rails,amoody2108/TechForJustice,koic/rails,sergey-alekseev/rails,Edouard-chin/rails,mohitnatoo/rails,vipulnsward/rails,coreyward/rails,Sen-Zhang/rails,lucasmazza/rails,sealocal/rails,kddeisz/rails,rbhitchcock/rails,repinel/rails,illacceptanything/illacceptanything,88rabbit/newRails,iainbeeston/rails,gfvcastro/rails,betesh/rails,esparta/rails,maicher/rails,bogdanvlviv/rails,ttanimichi/rails,kmcphillips/rails,felipecvo/rails,esparta/rails,repinel/rails,felipecvo/rails,brchristian/rails,baerjam/rails,bradleypriest/rails,alecspopa/rails,illacceptanything/illacceptanything,mijoharas/rails,aditya-kapoor/rails,BlakeWilliams/ra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