Added is phpdoc

This is simple snippet for function declarations, which I use in my code. Two notes: 

1. I'd like to predefine "author" and "copyright" as soon as Atom allows this.
2. It'd be nice (again, if Atom allows) to scan function parameters and add as many @param + type lines as needed.

As reference, Sublime Text has an excellent package for this purpose: https://github.com/spadgos/sublime-jsdocs