parameterized class and fixed issue still with lock file on Ubuntu
Update mongod.conf.erb
fixed path issues for instances
Merge branch 'master' of https://github.com/cdenneen/puppet-mongodb

* 'master' of https://github.com/cdenneen/puppet-mongodb:
  Update mongod.conf.erb

Conflicts:
	templates/mongod.conf.erb
Merge pull request #23 from cdenneen/master

parameterized class and fixed issue still with lock file on Ubuntu