Add docs.

src/main/java/com/raoulvdberge/refinedstorage/api/autocrafting/ICraftingManager.java

@@ -49,6 +49,9 @@ public interface ICraftingManager {
     @Nullable
     ICraftingTask create(ItemStack stack, int quantity);
 
+    /**
+     * @return a new pattern chain list
+     */
     ICraftingPatternChainList createPatternChainList();
 
     /**

src/main/java/com/raoulvdberge/refinedstorage/api/autocrafting/ICraftingPattern.java

@@ -66,7 +66,14 @@ public interface ICraftingPattern {
      */
     String getId();
 
+    /**
+     * @param other the other pattern
+     * @return true if this pattern chain be in a chain with the other pattern, false otherwise
+     */
     boolean canBeInChainWith(ICraftingPattern other);
 
+    /**
+     * @return the hashcode used to store the pattern chains
+     */
     int getChainHashCode();
 }

src/main/java/com/raoulvdberge/refinedstorage/api/autocrafting/ICraftingPatternChain.java

@@ -1,7 +1,18 @@
 package com.raoulvdberge.refinedstorage.api.autocrafting;
 
+/**
+ * A crafting pattern chain, which stores equivalent patterns.
+ */
 public interface ICraftingPatternChain {
+    /**
+     * @return the current pattern in the chain
+     */
     ICraftingPattern current();
 
+    /**
+     * Cycles the pattern in the chain.
+     *
+     * @return the cycled (and now current) pattern
+     */
     ICraftingPattern cycle();
 }

src/main/java/com/raoulvdberge/refinedstorage/api/autocrafting/ICraftingPatternChainList.java

@@ -1,5 +1,12 @@
 package com.raoulvdberge.refinedstorage.api.autocrafting;
 
+/**
+ * A list of pattern chains per pattern.
+ */
 public interface ICraftingPatternChainList {
+    /**
+     * @param pattern the pattern
+     * @return a chain for the pattern
+     */
     ICraftingPatternChain getChain(ICraftingPattern pattern);
 }