setup configuration file for travis ci

.travis.yml

   
 before_script:
   - "psql -c 'create database tracim_test;' -U postgres"
-  - "cd tracim && gearbox setup-app && cd -"
+  - "cp tracim/development.ini.base tracim/development.ini"
+  - "cd tracim && gearbox setup-app; cd -"
 
 # command to run tests
 script: nosetests --with-coverage --cover-package=tracim