Added default.opml.
Added reveal.js template.

(From a patch by jamiefolson.)
New version of default.revealjs.

Also note rename:  .reveal_js -> .revealjs.
revealjs template - include pdf css stylesheet by default.
Slidy template: use slidy.js rather than .js.gz.
Docbook template:  Use docbook 5.5.  Closes #25.
LaTeX template:  Changes to make mathfont work with xelatex.

We need the mathspec library, not just fontspec, for this.
We also need to set options for setmathfont.
revealjs template: use remotes by default, set defaults from query hash.
Fixed errors introduced in last revealjs template update.
default.latex: Redefine includegraphics to allow custom options.

Thanks to Bernhard Weichel.
Now, literal \includegraphics commands with square-bracketed options
will work properly.  When no options are given, a default option
limits images to the text width.
default.latex:  Use \ScaleIfNeeded w/ nicer def instead of \maxwidth.
default.beamer:  Added comment to graphics section.
Add class attribute to title slide section tag

It would be useful to have a class attribute for the title slide's section tag. For example, this is useful for setting a background image unique to the title slide.
Merge pull request #29 from abakst/patch-1

Add class attribute to title slide section tag
Add citecolor variable
Added subtitle to html and latex formats.
OPML template:  Use 'for' in author.
Added #TITLE: to title in org template.

Previously the writer inserted this.
Merge pull request #31 from aaronwolen/master

Provide a variable to define citation color
man template:  removed `description`, added `header`, `footer`.

Added quotes where needed.