Add support for CommonHTML Jax output + Refactor

[OmarIthawi]

Closes #6

TODO

• Testing
• Update the README to note about CSS updates -> Update the README to note about CSS updates #8
• Refactor the stylesheet out of the demo sheet
  • Include the stylesheet in dist directory as well
• Provide a quickly re-usable example in the docs -> Provide a quickly re-usable example in the docs #9
• DRY: Both HTML-CSS and CommonHTML
  • Kind of done.
• Fix the cluttered characters, a lookup table for letter/word dimensions is needed?
• \transt is printing the words in reverse order, direction: rtl fixes it, but also breaks other characters.
  • Fix it in \transt? by hacking spaces with something like NbSp perhaps?

Preview

Looks good so far: