backport from github, attempt to load mime-types locally before loading rubygems
backport from github, attempt to load mime-types locally before loading rubygems

isabanin/grit,isabanin/grit,gitlabhq/grit,gitcafe-dev/grit,HrishikeshSingh/testmodulerepo,kevinsawicki/grit,brynary/grit,thommay/grit,flycutter/grit,redronin/grit,patientslikeme/grit,flycutter/grit,rgroux/grit,thommay/grit,mojombo/grit,gitlabhq/grit,brynary/grit,HrishikeshSingh/testmodulerepo,abicky/grit,kevinsawicki/grit,renatoramiro/grit,gitcafe-dev/grit,github/grit,rgroux/grit