Added README

README.md

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+# Java SQLite Viewer
+A GUI application to view and edit SQLite databases. Based on an intermediate swing project,
+I added some neat features such as file selection and named borders around the sections.
+
+![Screenshot of the text editor](./app/res/screenshot-viewer.png)
+
+## Install
+- Download the .jar file (requires JVM) _or_ binary for your system
+- Alternatively you can download the source code and compile it yourself
+
+## How to use
+- Load a *.db file from disk from the menu
+- Open it (connect)
+- Select the table you want to edit or view
+- See the result in the area below
+
+_To get started you can download a sample file from sqlitetutorial.net [here](https://www.sqlitetutorial.net/sqlite-sample-database/)._
+
+## Technologies
+- Java
+- Gradle
+- SQLite
+
+## Roadmap
+I plan on adding support for more SQL-flavours such as PostgresQL, MySQL and MSSQL in the future.