Added README file

README.md

+Welcome! This is an implementation of a typical text editor application along with some MS-Word like added functionalities.
+The features are implemented in C# programming language using the functionalities (RichTextBox component) provided in .NET Framework. 
+
+System Requirements :
+- Visual Studio IDE
+- OS : Windows/Linux
+- 1.68 GB of storage space
+- Data pack - minimum 1.68 GB of data
+
+Steps to run the application :
+1. Install Visual Studio Community 2019 Installer (https://visualstudio.microsoft.com/downloads/)
+2. Open the Installer
+3. Select .NET desktop development
+4. Click on Download/Install (will download 1.68 GB of data)
+6. Open Visual Studio
+7. Click on existing project
+8. Select the file from this repository
+9. Click on start button
+
+Main features implemented :
+- Denoting Line Numbers on the left hand side of the canvas
+- Changing Font Style
+- Changing Font Size
+- Changing Font Color
+- Changing Background Color
+- Text Highlighting
+- Removing/Inserting Bullets
+- Adding.Removing Tabular Data
+- Adding.Removing Images
+- Changing Text Alignment
+- Saving/Reopening the file
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