feat(test): seed script sniff test (#91)

* feat(test): seed script sniff test

* chore(seed.spec): fix indentation

* chore(package-lock): update lockfile

* docs(seed.spec): correct comment re: timeout

* feat(seed): use seed script directly in spec

* fix(travis): remove hard-coded npm version (outdated)

* fix(travis): add npm install to support `ci`

* fix(package-lock): regenerate lockfile from scratch

.travis.yml

@@ -12,8 +12,8 @@ notifications:
     on_success: change # default: change (only when going from broken to fixed)
     on_failure: always # default: always (which is annoying, as it should be)
 install:
-  - npm i -g npm@5.7.1 # delete once 5.7.X is out of "pre-release"
-  - npm ci             # faster, goes only from package-lock
+  - npm i -g npm # delete once default travis npm supports `ci` command
+  - npm ci       # faster, goes only from package-lock
 before_script:
   - psql -c 'create database "boilermaker-test";' -U postgres # remember to change this name if you change it elsewhere (e.g. package.json)