small doc changes
work in progress - create single output file with all markdown output merged into one
make it possible at runtime to either generate markdown or HTML via command line option (html is default)
replace checking for markdown or Html output type based on string - introduce enumeration
Merge branch 'enhancedocgeneration-introduceEnumeration' of github.com:dominiqueplante/docs

Conflicts:
	Tools/RavenDB.DocsCompiler/RavenDB.DocsCompiler.Runner/Program.cs
	Tools/RavenDB.DocsCompiler/RavenDB.DocsCompiler/MagicWorkers/DocumentationParser.cs
	Tools/RavenDB.DocsCompiler/RavenDB.DocsCompiler/Output/HtmlDocsOutput.cs
Merge branch 'master' of github.com:ravendb/docs