modify readme to add a description and a development setup guide

README.md

@@ -1,3 +1,26 @@
-# libreshop_client
+# LibreShop
 
-Wii Homebrew downloader
+LibreShop is a program that lets you download, update, and install homebrew software onto your Wii without even needing to touch a computer.
+
+## Development setup
+
+First, install the devkitppc toolchain.
+
+Next, install all the dependencies.
+```
+# (dkp-)pacman -S ppc-jansson
+```
+In addition, you'll have to download the submodule dependencies.
+```
+$ git submodule init
+$ git submodule update
+```
+
+Now all you need to do is edit, compile, and run!
+```
+$ make
+```
+If you have Wiiload installed and correctly setup, you can use it with the following command:
+```
+$ make run
+```