Update README

README.md

@@ -1,8 +1,11 @@
 # Audio Cassette Backup
 Audio Cassette Backup application allows you to easily create a high quality backup of your code, photos, or important documents on an audio cassette using tape recorder. 
 
-## Contribute! 
-The project is open for joining one day only - [April 1st, 2019](https://github.com/dmitry-pavlov/audio-cassette-backup/blob/master/src/AudioCassetteBackup/Program.cs). All requests after this date won't be accepted. Hurry up! 
+## Contributors
+- Dmitry Pavlov | also knows as the "[Coding Machine](http://coding-machine.net/)"
+  - feel free to drop me a line at [[email protected]](mailto:[email protected])
+
+NOTE: The project is open for joining one day only - [April 1st, 2021](https://github.com/dmitry-pavlov/audio-cassette-backup/blob/master/src/AudioCassetteBackup/Program.cs). All requests after this date won't be accepted. Hurry up! (:  
 
 ## Support Development
 If you like the project but have no time or skills to contribute as a software developer please consider supporting it by [buying a coffee](https://www.buymeacoffee.com/dmitrypavlov). We will convert #C0FFEE to #C0DE. Thank you for your support! 
@@ -30,3 +33,4 @@ If you like the project but have no time or skills to contribute as a software d
 - Vinay Yadav (Asst. Professor/Department of CSE/SR Group of Institutions, Lucknow)
 - Sumeet Gupta (Asst. Professor /Department of CSE/SR Group of Institutions, Lucknow)
 - Vijay Jaiswal (Research Scholar /Department of CSE/UPTU, Lucknow)
+

src/AudioCassetteBackup.sln

@@ -1,9 +1,17 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.438
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30914.41
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AudioCassetteBackup", "AudioCassetteBackup\AudioCassetteBackup.csproj", "{F49C6263-4524-4E57-8B98-8527A9593E47}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AudioCassetteBackup", "AudioCassetteBackup\AudioCassetteBackup.csproj", "{F49C6263-4524-4E57-8B98-8527A9593E47}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{6AC2F934-BAE4-454A-83BB-1CEC50C5773B}"
+	ProjectSection(SolutionItems) = preProject
+		..\_config.yml = ..\_config.yml
+		..\apple-software.jpg = ..\apple-software.jpg
+		..\LICENSE = ..\LICENSE
+		..\README.md = ..\README.md
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution