* ConfigurationAdapter.cs: moved classes and interfaces 

* DocToMarkdown.sln:
* Program.cs:
* NLog.config:
* MarkdownType.cs:
* DocToMarkdown.csproj:
* MarkdownType.cs:
* ParseXmlToMarkdown.cs:
* XElementCorrection.cs:
* IEnvironment.cs:
* ParseXmlToMarkdown.cs:
* XElementCorrection.cs:
* IConfiguration.cs:
* EnvironmentAdapter.cs:
* ConfigurationAdapter.cs:
* IEnvironment.cs:
* IConfiguration.cs:
* DocToMarkdown.Common.csproj:
* EnvironmentAdapter.cs:
* DocToMarkdown.Tests.csproj:
* CMarkdownNodeParser.cs:
* SeeMarkdownNodeParser.cs:
* DocMarkdownNodeParser.cs:
* ParaMarkdownNodeParser.cs:
* CodeMarkdownNodeParser.cs:
* ValueMarkdownNodeParser.cs:
* ParamMarkdownNodeParser.cs:
* MemberMarkdownNodeParser.cs:
* IncludeMarkdownNodeParser.cs:
* ExampleMarkdownNodeParser.cs:
* SeealsoMarkdownNodeParser.cs:
* SummaryMarkdownNodeParser.cs:
* RemarksMarkdownNodeParser.cs:
* ReturnsMarkdownNodeParser.cs:
* ParamRefMarkdownNodeParser.cs:
* TypeparamMarkdownNodeParser.cs:
* ExceptionMarkdownNodeParser.cs:
* PermissionMarkdownNodeParser.cs:
* TypeparamrefMarkdownNodeParser.cs:
* SummaryMarkdownNodeParserTest.cs: moved classes and interfaces