Check that the token proceeding the colon isn't LBRACE
Check that the token proceeding the colon isn't LBRACE

If it's an LBRACE, then what we've found is part of a case statement,
not a resource.

Closes #10

toby82/puppet-lint,vStone/puppet-lint,rodjek/puppet-lint,raphink/puppet-lint,rothsa/puppet-lint,alphagov/puppet-lint,keeleysam/puppet-lint,danzilio/puppet-lint,paulgeringer/puppet-lint,Rovanion/puppet-lint,yulis/puppet-lint