Update and rename README.txt to README.md

Author: BastouP411

README.md

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+[![Current build status](https://github.com/SquidDev-CC/CC-Tweaked/workflows/Build/badge.svg)](https://github.com/BastouP411/bperipherals/actions "Current build status") [![Download BPeripherals on CurseForge](http://cf.way2muchnoise.eu/title/bperipherals.svg)](https://www.curseforge.com/minecraft/mc-mods/bperipherals "Download BPeripherals on CurseForge")
+
+## Features
+BPeripherals brings new peripherals to ComputerCraft:
+ * A database that allows the user to store data in an SQLite database.
+ * A cryptographic accelerator that provides lots of ready to use cryptography functions.
+ * A magnetic card reader that can write and read data from magnetic cards.
+ * A FE Meter that is able to measure/restrict Forge energy currents passing through it.
+
+More information on the peripherals is availiable from the [wiki](https://github.com/BastouP411/bperipherals/wiki).
+
+## Contributing
+Contributions are open on this wiki !
+Just post an issue before opening a pull request to discuss big changes.
+You may also fork this repo, but you'll have to reuse the [Computercraft Public License](https://github.com/BastouP411/bperipherals/blob/master/LICENSE.txt) as this project uses some of Computercraft's assets and code.