Update DoxygenUtility README to reflect changes.

vim/scripts/DoxygenUtility/README.md
	-Change block-comment formatting in the README usage example to
	reflect recent changes to the plugin (a691fa3, 6545882).
Set up skeleton JSDocUtility plugin.

vim/scripts/JSDocUtility/
	-Add a directory for the JSDocUtility Vim plugin.

vim/scripts/JSDocUtility/README.md
	-Add a placeholder README.

vim/scripts/JSDocUtility/autoload/
(JSDocUtility, ftplugin/javascript).vim
	-Add skeleton functions/configuration. No functional content,
	yet.
Define JSDocUtility helper/utility functions.

vim/scripts/JSDocUtility/autoload/JSDocUtility.vim
	-Define `s:CaptureOutputInRegister()`,
	`s:InsertStringAboveCurrentLine()`, and
	`s:GetJavascriptBlock()`, all of which will supplement other
	functions in the plugin.
Implement all JSDocUtility functions.

vim/scripts/JSDocUtility/autoload/JSDocUtility.vim
	-Define `IsOnClass()`, `IsOnFunction()`, and `IsOnFileHeader()`.
	-Define `InsertClassComment()`, `InsertFunctionComment()`, and
	`InsertFileHeaderComment()`.
	-Add documentation comments to each.
Add content to JSDocUtility README.

vim/scripts/JSDocUtility/README.md
	-Describe the contents of this plugin.
	-Add a usage example.
Merge branch 'feature/jsdoc_utility' into develop

vim/scripts/JSDocUtility/README.md
	-Implement a Vim plugin that generates JSDoc comments for
	Javascript code.
Add bundle/ symlink to JSDocUtility plugin.

vim/bundle/JSDocUtility
	-Create a `bundle/` symlink to the `JSDocUtility` plugin so that
	Vim can find and load it.