* DocToMarkdown.Tests.csproj:
* ParaMarkdownParserTest.cs: added test

* ParseXmlToMarkdown.cs: added para parser

* DocToMarkdown.csproj: deleted parser which was not needed (the
  needed tag is included automatically)

* ListMarkdownNodeParser.cs: Some bug fixes

* ParaMarkdownNodeParser.cs: implemented parser

* SeeMarkdownNodeParser.cs: some bug fixes

* ListMarkdownNodeParserTest.cs:
* SummaryMarkdownNodeParserTest.cs: renamed local variable

* IncludeMarkdownNodeParser.cs: deleted parser
Fixed small bug
fixed test for changess in class