Vim plugin reorg

[pcapel]

Reorganize and document the current plugins for vim. We remove the mxw/vim-jsx plugin as it is deprecated and broken according to the README. The replacement is the suggested plugin. Additionally we just removed outright the coffeescript plugin.

To help with organizing we added foldmethod=marker for vim files so that the vimbundle loads with some organizing folds around logically grouped plugins. This helps with readability with the inline documentation of the plugins.

Any feedback on the documentation is welcome. The goal was to try and synthesize the most useful parts of the plugins so that anyone could read through and get a sense of the rationale behind each plugin being a part of our core workflow.

[avogel3]

Hey Phil, thanks for taking the time to put this together. I definitely laughed at a few of your extremely witty comments 😂 I'm not sure if you are done with the PR yet, however I already started to leave some feedback.

In addition to what I've already mentioned, I would request that you remove comments that state an opinion about a plugin. Other than that, looks good 👍