Fix comment in upstart script

`@provides` == `mongod` and not `mongodb`, so we should not use this value. The value is also not printed since it is missing a `=` sign , i.e `<%=`
Merge pull request #200 from allaire/patch-1

Fix comment in upstart script
Using Upstart provider for service 

If you are using ubuntu , automatically installing init script. But recipe trying to enable init.d service.
The platform introspection mixin was added in Chef 11 for attributes files
Merge pull request #201 from nonflet/patch-1

Using Upstart provider for service
update syntax for clarity
upstart init files are 644
use the default service name for shard and config server. configure node[:mongodb][:instance_name] if you want something else
add chefspec tests
add travis support
bundle without integration group on travis
catch loaderrors from loading kitchen
convert init scripts from using node attributes to template variables
convert mongodb.conf from using node attributes to template variables
clean up replicaset_name selection logic
replace quirky boolean check with is_replicaset
make sure the replica set name makes it to the config file
update default replSet selection logic to match mongodb_instance
Fix token replacement in mms-agent recipe and attributes
Fix bug with the mms_server token replacement and add attribute