[Draft 1]Add Model and ModelTable Snippets

Add snippet for Model file, with DocBlockr comments.
First Draft, from my experience with ZF2 Skeleton Application and ZF2
Quick Start guide.
Helper for Form file
Add php open tag and controller snippet

Add <?php open tag for all snippet.
New snipper controller basic.
Path inside sulbime package

Juste for me I think.
Clone ZF2Helper inside sublime package directory, and folder name is
not same as package downloaded.
Merge pull request #5 from yannux/master

New snippets