Update docs

README.md

@@ -10,8 +10,9 @@
 - No special permissions required for file URLs
 - Full control over the allowed origins
 - Supports [GitHub Flavored Markdown][gfm]
-- Full control over the [compiler options][compiler-options] ([marked][marked])
-- Themes support (including GitHub theme) ([jasonm23][themes1], [mixu][themes2], [cobalt][themes3])
+- Multiple markdown parsers
+- Full control over the [compiler options][compiler-options] ([marked][marked] or [showdown][showdown])
+- Themes support (including [GitHub theme][themes0]) ([jasonm23][themes1], [mixu][themes2], [cobalt][themes3])
 - Syntax highlighted code blocks ([prism][prism])
 - Generates Table of Contents (TOC)
 - Remembers scroll position
@@ -36,6 +37,8 @@
 
 ## Compiler Options
 
+### Marked
+
 Option          | Default | Description
 :---            | :---    | :---
 **gfm**         | `true`  | Enable GFM [GitHub Flavored Markdown][gfm].
@@ -46,6 +49,32 @@ Option          | Default | Description
 **smartLists**  | `false` | Use smarter list behavior than the original markdown. May eventually be default with the old behavior moved into pedantic.
 **smartypants** | `false` | Use "smart" typograhic punctuation for things like quotes and dashes.
 
+### Showdown
+
+Option          | Default | Description
+:---            | :---    | :---
+**disableForced4SpacesIndentedSublists** | `true` | Disables the requirement of indenting nested sublists by 4 spaces
+**encodeEmails** | `true` | Encode e-mail addresses through the use of Character Entities, transforming ASCII e-mail addresses into its equivalent decimal entities
+**excludeTrailingPunctuationFromURLs** | `true` | Excludes trailing punctuation from links generated with autoLinking
+**ghCodeBlocks** | `true` | Turn on/off GFM fenced code blocks support
+**ghCompatibleHeaderId** | `true` | Generate header ids compatible with github style (spaces are replaced with dashes, a bunch of non alphanumeric chars are removed)
+**ghMentions** | `true` | Enables github @mentions
+**headerLevelStart** | `false` | The header blocks level start
+**literalMidWordUnderscores** | `true` | Parse midword underscores as literal underscores
+**noHeaderId** | `false` | Turn on/off generated header id
+**omitExtraWLInCodeBlocks** | `true` | Omit the default extra whiteline added to code blocks
+**parseImgDimensions** | `false` | Turn on/off image dimension parsing
+**prefixHeaderId** | `false` | Specify a prefix to generated header ids
+**requireSpaceBeforeHeadingText** | `true` | Makes adding a space between `#` and the header text mandatory (GFM Style)
+**simpleLineBreaks** | `true` | Parses simple line breaks as <br> (GFM Style)
+**simplifiedAutoLink** | `true` | Turn on/off GFM autolink style
+**smartIndentationFix** | `false` | Tries to smartly fix indentation in es6 strings
+**smoothLivePreview** | `false` | Prevents weird effects in live previews due to incomplete input
+**strikethrough** | `true` | Turn on/off strikethrough support
+**tables** | `true` | Turn on/off tables support
+**tablesHeaderId** | `true` | Add an id to table headers
+**tasklists** | `true` | Turn on/off GFM tasklist support
+
 
 ## Content Options
 
@@ -136,8 +165,10 @@ SOFTWARE.
 
 
   [marked]: https://github.com/chjj/marked
-  [gfm]: https://help.github.com/articles/github-flavored-markdown
-  [compiler-options]: https://github.com/chjj/marked#gfm
+  [showdown]: https://github.com/showdownjs/showdown
+  [gfm]: https://guides.github.com/features/mastering-markdown/#GitHub-flavored-markdown
+  [compiler-options]: #compiler-options
+  [themes0]: https://github.com/sindresorhus/github-markdown-css
   [themes1]: https://github.com/jasonm23/markdown-css-themes
   [themes2]: https://github.com/mixu/markdown-styles
   [themes3]: https://github.com/nWODT-Cobalt/markown-utilities