fix: fixes version of npm

Author: damien

.travis.yml

@@ -10,4 +10,6 @@ node_js:
 before_install:
   - npm install fh-build -g
   - fh-build template
-install: npm install --no-optional
+install: 
+  - npm install -g npm@3.10.10
+  - npm install --no-optional