update readme

README.md

@@ -2,6 +2,41 @@
 A tool for modifying and merging Sven Co-op maps without decompiling.
 
 # Usage
+To launch the 3D editor, drag and drop a .bsp file onto the executable, or "Open with" bspguy, or run `bspguy <mapname>`
+
+See the [wiki](https://github.com/wootguy/bspguy/wiki) for tutorials.
+
+## Editor Features
+- Keyvalue editor with FGD support
+- Entity + BSP model creation and duplication
+- Easy object movement and scaling
+- Vertex manipulation + face splitting
+    - Used to make perfectly shaped triggers. A box is often good enough, though.
+- BSP model origin movement/alignment
+- Optimize + clean commands to prevent overflows
+- Hull deletion + redirection + creation
+  - clipnode generation is similar to `-cliptype legacy` in the CSG compiler (the _worst_ method)
+- Basic face editing
+
+![image](https://user-images.githubusercontent.com/12087544/88471604-1768ac80-cec0-11ea-9ce5-13095e843ce7.png)
+
+**The editor is full of bugs, unstable, and has no undo button yet. Save early and often! Make backups before experimenting with anything.**
+
+Requires OpenGL 3.0 or later.
+
+## First-time Setup
+1. Click `File` -> `Settings` -> `General`
+1. Set the `Game Directory` to your `Sven Co-op` folder path, then click `Apply Changes`.
+    - This will fix the missing textures.
+1. Click the `FGDs` tab and add the full path to your sven-coop.fgd (found in `Sven Co-op/svencoop/`). Click `Apply Changes`.
+    - This will give point entities more colorful cubes, and enable the `Attributes` tab in the `Keyvalue editor`.
+
+bspguy saves configuration files to `%APPDATA%/bspguy` on Windows.
+
+
+## Command Line
+Some functions are only available via the CLI.
+
 ```
 Usage: bspguy <command> <mapname> [options]
 
@@ -16,10 +51,6 @@ Usage: bspguy <command> <mapname> [options]
 Run 'bspguy <command> help' to read about a specific command.
 ```
 
-To launch the 3D editor, drag and drop a .bsp file onto the executable, or "Open with" bspguy, or run `bspguy <mapname>`
-
-See the [wiki](https://github.com/wootguy/bspguy/wiki) for more info.
-
 # Building the source
 ### Windows users:
 1. Install CMake and Visual Studio