Format README feature lists as checkboxes

Author: NonSwag

README.md

@@ -5,21 +5,21 @@ Create world groups and define custom rules that match your needs.
 
 ### Why Choose PerWorlds?
 
-PerWorlds is designed to work smoothly with existing plugins and APIs.  
-Highly configurable, yet easy to use, and fast to set up.  
-Sync pretty much everything on a group-specific basis.  
-Safe data de/serialization for lossless version upgrades.  
-Light on performance.
+- [x] PerWorlds is designed to work smoothly with existing plugins and APIs.
+- [x] Highly configurable, yet easy to use, and fast to set up.
+- [x] Sync pretty much everything on a group-specific basis.
+- [x] Safe data de/serialization for lossless version upgrades.
+- [x] Light on performance.
 
 ### Options and Syncing
 
 Define which data is synced between groups:
 
-Game modes  
-Time and weather  
-Inventories, Ender Chests, and stats  
-Attributes (health, speed, XP, etc.)  
-Chat behavior, tablist visibility, and more!
+- Game modes
+- Time and weather
+- Inventories, Ender Chests, and stats
+- Attributes (health, speed, XP, etc.)
+- Chat behavior, tablist visibility, and more!
 
 ---