Remove metadata, since it's not correct
Merge pull request #74 from hunner/remove_os_stuff

Remove metadata, since it's not correct
Fix the specs.
Update travis settings.
Merge pull request #76 from apenney/fix-specs

Fix the specs.
Give option to name nodejs and npm package name by creating variables $node_package_name and $npm_package_name in class definition.

Give option to ignore npm package with install_npm_package flag.

Example:
```
class { '::nodejs':
    install_npm_package => false
}
```