Use Node 8 in Travis

Author: alshakero

.travis.yml

@@ -7,7 +7,7 @@ before_script:
   - 'export PATH=$PWD/node_modules/.bin:$PATH'
   - bower install
   - "if [ -v JUICY_TATTOO_DEPENDENCY ]; then bower uninstall ${JUICY_TATTOO_DEPENDENCY} ${JUICY_TATTOO_DEPENDENCY_SLUG} --save; bower install ${JUICY_TATTOO_DEPENDENCY_SLUG}#${JUICY_TATTOO_DEPENDENCY_COMMIT}; fi"
-node_js: stable
+node_js: 8
 addons:
   firefox: latest
   apt: