I forgot

src/main/java/me/shedaniel/rei/api/ConfigObject.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.api;
 
 import me.shedaniel.rei.gui.config.ItemCheatingMode;

src/main/java/me/shedaniel/rei/api/Entry.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.api;
 
 import me.shedaniel.rei.impl.FluidEntry;

src/main/java/me/shedaniel/rei/gui/renderers/FluidRenderer.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.gui.renderers;
 
 import com.google.common.collect.Lists;

src/main/java/me/shedaniel/rei/impl/FluidEntry.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.impl;
 
 import me.shedaniel.rei.api.Entry;

src/main/java/me/shedaniel/rei/impl/ItemStackEntry.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.impl;
 
 import me.shedaniel.rei.api.Entry;

src/main/java/me/shedaniel/rei/server/RecipeFinder.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.server;
 
 import com.google.common.collect.Lists;

src/main/java/me/shedaniel/rei/server/RecipeGridAligner.java

@@ -1,3 +1,8 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
 package me.shedaniel.rei.server;
 
 import net.minecraft.recipe.Ingredient;