option to write tmp files to indicate the file is being edited (.lck , .tmp, .swp)

The lack of ability to write and look for .swp files is preventing me from using sublime as my primary editor.

I work with a team in a common codebase, the way we keep from stepping on eachother's toes is when we go to open a file in vim, it notifies us that the file is being worked on.

I don't need the ability to actually READ .swp files, but it would be awesome to be able to look for the existence upon opening.  Also, sublime should create a .swp file when opening a file.