InlineParser supports the notation for inline literals
HtmlFormat supports the notation for inline literals.
MarkDownFormat supports the notation for inline literals.
cosmetic changes for HtmlFormat
Experimental support for escaping inline tags in HtmlFormat:

A start/end tag of inline elments are escaped when they are enclosed in plugin tags.
"{{ {}}" and "{{} }}" are presented as "{{" and "}}" respectively.
Experimental support for escaping inline tags in MarkDownFormat.

"{{ {}}" and "{{} }}" are presented as "{{" and "}}" respectively.
update README.md and samples