fix(travis.yml): CI uses now node version 10 (#754)

Author: Wenish

template/.travis.yml

@@ -35,7 +35,7 @@ install:
 #- export DISPLAY=':99.0'
 #- Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
 {{/testing}}
-- nvm install 7
+- nvm install 10
 - curl -o- -L https://yarnpkg.com/install.sh | bash
 - source ~/.bashrc
 - npm install -g xvfb-maybe