Gemfile: Fix errors caused by not including spork on travis-ci.
Gemfile: Fix errors caused by not including spork on travis-ci.

eeeeeean/windchimes,matthewkmayer/calagator,kerrizor/calagator,VolunteerOdyssey/calagator,matthewkmayer/calagator,cp/calagator-1,bencornelis/calagator,L2-D2/calagator,nblackburn87/calagator,alexbeeken/calagator.org,L2-D2/calagator,CorainChicago/ActivateHub,cp/calagator-1,iamBalaji/Calagator,nblackburn87/calagator,reidab/calagator,oktober/calagator,shawnacscott/calagator,iamBalaji/Calagator,shawnacscott/calagator,bencornelis/calagator,Eugator-Wranglers/calagator,shawnacscott/calagator,oktober/calagator,kerrizor/calagator,reidab/calagator,Villag/dentonator,nblackburn87/calagator,L2-D2/calagator,bencornelis/calagator,VolunteerOdyssey/calagator,CorainChicago/ActivateHub,jmcduffie32/calagator,jmcduffie32/calagator,alexbeeken/calagator.org,matthewkmayer/calagator,iamBalaji/Calagator,iamBalaji/Calagator,VolunteerOdyssey/calagator,bencornelis/calagator,oktober/calagator,eeeeeean/windchimes,reidab/calagator,kerrizor/calagator,matthewkmayer/calagator,shawnacscott/calagator,Villag/dentonator,cp/calagator-1,jmcduffie32/calagator,Eugator-Wranglers/calagator,oktober/calagator,dudleysr/calagator-workspace,reidab/calagator,CorainChicago/ActivateHub,CorainChicago/ActivateHub,dudleysr/calagator-workspace,cp/calagator-1,Villag/dentonator,jmcduffie32/calagator,kerrizor/calagator,L2-D2/calagator