WIP - set node to v5.5
WIP - set node to v5.5

Configuration parts taken from
https://github.com/owickstrom/purescript-spec/blob/master/.travis.yml

- not use sudo
- install purescript in users' home directory
- add home directory to path
- use travis_wait to trigger builds and tests

mostalive/purescript-firebase,mostalive/purescript-firebase,mostalive/purescript-firebase