update to 48b, new fabric-loader definition

build.gradle

@@ -29,7 +29,7 @@ minecraft {
 }
 
 dependencies {
-	minecraft "com.mojang:minecraft:18w44a"
-	mappings "net.fabricmc:pomf:18w44a.38"
-	modCompile "net.fabricmc:fabric-loader:18w44a-0.1.0.43"
+	minecraft "com.mojang:minecraft:18w48b"
+	mappings "net.fabricmc:pomf:18w48b.4"
+	modCompile "net.fabricmc:fabric-loader:0.1.0.48"
 }

src/main/java/net/fabricmc/example/mixin/ExampleMixin.java

 package net.fabricmc.example.mixin;
 
-import net.minecraft.client.MinecraftGame;
+import net.minecraft.client.MinecraftClient;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-@Mixin(MinecraftGame.class)
+@Mixin(MinecraftClient.class)
 public class ExampleMixin {
 	@Inject(at = @At("HEAD"), method = "init()V")
 	private void init(CallbackInfo info) {