doc update

Author: mtumilowicz

README.md

@@ -1 +1,17 @@
 # java8-map-functions
+
+* public static <K extends Comparable<? super K>, V> Comparator<Map.Entry<K, V>> comparingByKey()
+* public static <K, V extends Comparable<? super V>> Comparator<Map.Entry<K, V>> comparingByValue()
+* public static <K, V> Comparator<Map.Entry<K, V>> comparingByKey(Comparator<? super K> cmp)
+* public static <K, V> Comparator<Map.Entry<K, V>> comparingByValue(Comparator<? super V> cmp)
+* default V getOrDefault(Object key, V defaultValue)
+* default void forEach(BiConsumer<? super K, ? super V> action)
+* default void replaceAll(BiFunction<? super K, ? super V, ? extends V> function)
+* default V putIfAbsent(K key, V value)
+* default boolean remove(Object key, Object value)
+* default boolean replace(K key, V oldValue, V newValue)
+* default V replace(K key, V value)
+* default V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction)
+* default V computeIfPresent(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction)
+* default V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction)
+* default V merge(K key, V value, BiFunction<? super V, ? super V, ? extends V> remappingFunction)