chore: output npm version in travis (#850)

Knowing the `npm` version was a huge help to debugging issue #844. For some reason, we output this on appveyor but not on Travis. This PR fixes that.
shelljs · May 11, 2018 · aa9d443 · aa9d443
1 parent 4733a32
commit aa9d443
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -17,6 +17,7 @@ install:
   - source ~/.nvm/nvm.sh
   - nvm install $NODE_VERSION
   - node --version
+  - npm --version
   - npm install
 os:
   - linux