Update readme with instructions for new functions

Author: mattphillips

README.md

@@ -3,14 +3,57 @@
 [![Build Status](https://travis-ci.org/mattphillips/deep-object-diff.svg?branch=master)](https://travis-ci.org/mattphillips/deep-object-diff)
 [![Coverage Status](https://coveralls.io/repos/github/mattphillips/deep-object-diff/badge.svg?branch=master)](https://coveralls.io/github/mattphillips/deep-object-diff?branch=master)
 
-A small library that will deep diff two JavaScript Objects, including nested structures of arrays and objects, and return the difference.
+A small library that can deep diff two JavaScript Objects, including nested structures of arrays and objects.
 
-### Useage:
+## Installation
+```
+npm i --save deep-object-diff
+```
+
+## Functions available:
+ - ### [`diff(originalObj, updatedObj)`](#diff)
+ returns the difference of the original and updated objects
+
+ - ### [`addedDiff(original, updatedObj)`](#addeddiff)
+ returns only the values added to the updated object
+
+ - ### [`deletedDiff(original, updatedObj)`](#deleteddiff)
+ returns only the values deleted in the updated object
+
+ - ### [`updatedDiff(original, updatedObj)`](#updateddiff)
+ returns only the values that have been changed in the updated object
+
+ - ### [`detailedDiff(original, updatedObj)`](#detaileddiff)
+ returns an object with the added, deleted and updated differences
+
+## Importing
+
+ES6 / Babel:
+``` js
+import { diff, addedDiff, deletedDiff, updatedDiff, detailedDiff } from 'deep-object-diff';
+```
+
+ES5:
+``` js
+const { diff, addedDiff, deletedDiff, detailedDiff, updatedDiff } = require("deep-object-diff");
+
+// OR
+
+const diff = require("deep-object-diff").diff;
+const addedDiff = require("deep-object-diff").addedDiff;
+const deletedDiff = require("deep-object-diff").deletedDiff;
+const detailedDiff = require("deep-object-diff").detailedDiff;
+const updatedDiff = require("deep-object-diff").updatedDiff;
+```
+
+## Usage:
+
+### `diff`:
 ```js
 const lhs = {
   foo: {
     bar: {
-      a: [1, 2],
+      a: ['a', 'b'],
       b: 2,
       c: ['x', 'y'],
       e: 100 // deleted
@@ -22,18 +65,17 @@ const lhs = {
 const rhs = {
   foo: {
     bar: {
-      a: [1], // updated (value deleted)
+      a: ['a'], // index 1 ('b')  deleted
       b: 2, // unchanged
-      c: ['x', 'y', 'z'], // updated (value added)
+      c: ['x', 'y', 'z'], // 'z' added
       d: 'Hello, world!' // added
     }
   },
   buzz: 'fizz' // updated
 };
 
-console.log(diff(lhs, rhs));
-
-/* logs:
+console.log(diff(lhs, rhs)); // =>
+/*
 {
   foo: {
     bar: {
@@ -51,3 +93,179 @@ console.log(diff(lhs, rhs));
 }
 */
 ```
+
+### `addedDiff`:
+```js
+const lhs = {
+  foo: {
+    bar: {
+      a: ['a', 'b'],
+      b: 2,
+      c: ['x', 'y'],
+      e: 100 // deleted
+    }
+  },
+  buzz: 'world'
+};
+
+const rhs = {
+  foo: {
+    bar: {
+      a: ['a'], // index 1 ('b')  deleted
+      b: 2, // unchanged
+      c: ['x', 'y', 'z'], // 'z' added
+      d: 'Hello, world!' // added
+    }
+  },
+  buzz: 'fizz' // updated
+};
+
+console.log(addedDiff(lhs, rhs));
+
+/*
+{
+  foo: {
+    bar: {
+      c: {
+        '2': 'z'
+      },
+      d: 'Hello, world!'
+    }
+  }
+}
+*/
+```
+
+### `deletedDiff`:
+```js
+const lhs = {
+  foo: {
+    bar: {
+      a: ['a', 'b'],
+      b: 2,
+      c: ['x', 'y'],
+      e: 100 // deleted
+    }
+  },
+  buzz: 'world'
+};
+
+const rhs = {
+  foo: {
+    bar: {
+      a: ['a'], // index 1 ('b')  deleted
+      b: 2, // unchanged
+      c: ['x', 'y', 'z'], // 'z' added
+      d: 'Hello, world!' // added
+    }
+  },
+  buzz: 'fizz' // updated
+};
+
+console.log(deletedDiff(lhs, rhs));
+
+/*
+{
+  foo: {
+    bar: {
+      a: {
+        '1': undefined
+      },
+      e: undefined
+    }
+  }
+}
+*/
+```
+
+### `updatedDiff`:
+```js
+const lhs = {
+  foo: {
+    bar: {
+      a: ['a', 'b'],
+      b: 2,
+      c: ['x', 'y'],
+      e: 100 // deleted
+    }
+  },
+  buzz: 'world'
+};
+
+const rhs = {
+  foo: {
+    bar: {
+      a: ['a'], // index 1 ('b')  deleted
+      b: 2, // unchanged
+      c: ['x', 'y', 'z'], // 'z' added
+      d: 'Hello, world!' // added
+    }
+  },
+  buzz: 'fizz' // updated
+};
+
+console.log(updatedDiff(lhs, rhs));
+
+/*
+{
+  buzz: 'fizz'
+}
+*/
+```
+
+### `detailedDiff`:
+```js
+const lhs = {
+  foo: {
+    bar: {
+      a: ['a', 'b'],
+      b: 2,
+      c: ['x', 'y'],
+      e: 100 // deleted
+    }
+  },
+  buzz: 'world'
+};
+
+const rhs = {
+  foo: {
+    bar: {
+      a: ['a'], // index 1 ('b')  deleted
+      b: 2, // unchanged
+      c: ['x', 'y', 'z'], // 'z' added
+      d: 'Hello, world!' // added
+    }
+  },
+  buzz: 'fizz' // updated
+};
+
+console.log(detailedDiff(lhs, rhs));
+
+/*
+{
+  added: {
+    foo: {
+      bar: {
+        c: {
+          '2': 'z'
+        },
+        d: 'Hello, world!'
+      }
+    }
+  },
+  deleted: {
+    foo: {
+      bar: {
+        a: {
+          '1': undefined
+        },
+        e: undefined
+      }
+    }
+  },
+  updated: {
+    buzz: 'fizz'
+  }
+}
+*/
+```