Vim: fix console.log snippet

I forgot the description on this snippet, which made the `b` blow up the
rest of the snippets file.
Vim: use fat arrows for Jasmine snippets

We are using ES6, and are liking the fat arrow syntax for our Jasmine
functions. This makes the code look a bit cleaner.
Vim: Add /** JS snippet

I am always creating docblocks, so I added a snippet to make this
happen. While I was at it, I added some descriptions to a couple of
other nearby snippets.
Vim: remove '@' from JS docblock snippet

I use this snippet for docblocks that don't have tags in them at all.
Plus, snippets should be composable and putting this in there was over
the line.
Vim: add jasmine jsx filetype detection

We have some Jasmine specs that end in .jsx. To make this work a little
better, I am adding some filetype detection.
Vim: add "refactored" to dictionary