Simplify copying of files

[jamesplease]

#197 (comment)

This greatly simplifies the file copying logic, but it breaks from the Yeoman naming conventions. Is that worth it? Probably, but I'm going to think about it for awhile.

[jamesplease]

If I had to guess, the Yeoman naming conventions are there because package.json is a special file, but _package.json is not. I'm not sure how important it is to separate that out, though...it's not like anyone is going to go into their global npm install directory and run an npm command in this directory.

@thejameskyle / @megawac what do you think?

[megawac]

Yeah, I think its a non issue to consider

[jamesplease]

Yeah I'll prob. update to use the simpler code

[jamesplease]

Done