show postgres versionn

.travis.yml

@@ -32,6 +32,7 @@ install:
   - go get github.com/siddontang/ledisdb/ledis
   - go get github.com/ssdb/gossdb/ssdb
 before_script:
+  - psql --version
   - sh -c "if [ '$ORM_DRIVER' = 'postgres' ]; then psql -c 'create database orm_test;' -U postgres; fi"
   - sh -c "if [ '$ORM_DRIVER' = 'mysql' ]; then mysql -u root -e 'create database orm_test;'; fi"
   - sh -c "if [ '$ORM_DRIVER' = 'sqlite' ]; then touch $TRAVIS_BUILD_DIR/orm_test.db; fi"