fix: overwrite the default spec_helper file for good
fix: overwrite the default spec_helper file for good

problem: 
- spec from template folder is not overriding the default rspec spec_helper file

solution: 
- use FileUtils.copy_entry, that allows more low-level control for file copy-ing 
ddd-ruby/rdm,mindreframer/rdm,mindreframer/rdm,droidlabs/rdm,ddd-ruby/rdm,droidlabs/rdm,droidlabs/rdm