[Tests] print out shellcheck version
diff --git a/.travis.yml b/.travis.yml
index e032228..353ea00 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,6 +19,7 @@
   - $SHELL --version 2> /dev/null || dpkg -s $SHELL 2> /dev/null || which $SHELL
   - curl --version
   - wget --version
+  - shellcheck --version
 install:
   - if [ -z "${SHELLCHECK-}" ]; then nvm install node && npm install && npm prune && npm ls urchin doctoc eclint dockerfile_lint; fi
   - '[ -z "$WITHOUT_CURL" ] || sudo apt-get remove curl -y'