Updated dependency to puppetlabs/concat
Inherit from couchbase::params

Puppet error without the patch:
Scope(Class[Couchbase]): Could not look up qualified variable 'couchbase::params::version'; class couchbase::params has not been evaluated
Command couchbase-cli not found

More paths need to be added in order to not throw 'command not found' when referring to the couchbase-cli executable. (tested on Centos 6.4)
Updated module version and added gitignore for pkg
Added client libraries and improved bucket creation