Fixed db:migrate Rake task on ruby 1.9.2.
Fixed db:migrate Rake task on ruby 1.9.2.

The db:migrate task was failing as the 'require' command wasn't finding
the environment.rb file. I have used a require_relative instead.

Aelphy/traffic-light-server,dwhenry/workflow,gkunwar/sinatra-template,JohnHeywardOBrien/app,smoll/rest-test,mplacona/review-sample,thezerobit/sinatra-links,dankeezer/cleaningondemand,chaitupendyala/sinatra-template,smoll/rest-test,Core966/sinatra_VPS_app_template,lishinko/reader_backend_sinatra,gkunwar/sinatra-template,thezerobit/sinatra-links,seankwon/sinatra-template,lishinko/reader_backend_sinatra,willb/triv_leaser,dankeezer/cleaningondemand,IATM/Epilepsia,amrit/metar-grabber-sinatra,smoll/rest-test,IATM/Epilepsia,dankeezer/cleaningondemand,JohnHeywardOBrien/app,chaitupendyala/sinatra-template,seankwon/sinatra-template,zapnap/sinatra-template,bane73/ZombieJournal-REST,zapnap/sinatra-template,lishinko/reader_backend_sinatra