Introduce docs solution folder & screenshot file

Author: MirisWisdom

README.md

@@ -1,6 +1,6 @@
 <h1 align="center">NieRexper</h1>
 <p align="center">
-	<img src="https://user-images.githubusercontent.com/10241434/41818962-2523b262-77eb-11e8-842f-24e85c9e0381.png"/>
+	<img src="Screenshot.png"/>
  <br><br>
  Level Patcher for NieR:Automata
 </p>

Screenshot.png

@@ -9,6 +9,13 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "YuMi.NieRexper", "YuMi.NieR
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "YuMi.NieRexper.Test", "YuMi.NieRexper.Test\YuMi.NieRexper.Test.csproj", "{B2AE6DBB-B2F5-4544-8AFD-D49626B2BFE4}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "YuMi.NieRexper.Docs", "YuMi.NieRexper.Docs", "{4E580358-2238-4027-AEED-55D9EBD78629}"
+	ProjectSection(SolutionItems) = preProject
+		LICENSE = LICENSE
+		README.md = README.md
+		Screenshot.png = Screenshot.png
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU