feature(nessy) add ability to use custom divider

README.md

@@ -11,14 +11,31 @@ Set value in nested object.
 ```js
 const nessy = require('nessy');
 
-nessy('hello.world', 'why not?', {
+nessy('hello.world', 'why not?', '.', {
     hello: {
         world: {
             'could be used in browser as well'
         }
     }
 });
 
+// returns
+{
+    hello: {
+        world: {
+            'why not?'
+        }
+    }
+}
+
+nessy('hello*world', 'why not?', '*', {
+    hello: {
+        world: {
+            'can be used any divider'
+        }
+    }
+});
+
 // returns
 {
     hello: {

lib/nessy.js

@@ -1,13 +1,16 @@
 'use strict';
 
-module.exports = (selector, value, obj) => {
-    obj = obj || {};
+module.exports = (selector, value, divider, obj) => {
+    if (!obj) {
+        obj = divider || {};
+        divider = '.';
+    }
 
     const result = obj;
 
     check(selector);
 
-    selector.split('.')
+    selector.split(divider)
         .forEach((name, i, arr) => {
             if (i === arr.length - 1)
                 obj[name] = value;

package.json

@@ -57,4 +57,4 @@
     "tape": "^4.2.0"
   },
   "dependencies": {}
-}
+}

test/nessy.js

@@ -34,14 +34,33 @@ test('result: should set object\'s property', (t) => {
 });
 
 test('result: should set object\'s property, when there is parent node', (t) => {
-    const actual        = nessy('hello.world', 'anyone', {
+    const actual = nessy('hello.world', 'anyone', {
         hello: {
             world: 'someone',
             cloud: true
         }
     });
 
-    const expected      = {
+    const expected = {
+        hello: {
+            world: 'anyone',
+            cloud: true
+        }
+    };
+
+    t.deepEqual(actual, expected, 'should not clear parent node');
+    t.end();
+});
+
+test('nessy: custom divider', (t) => {
+    const actual = nessy('hello*world', 'anyone', '*', {
+        hello: {
+            world: 'someone',
+            cloud: true
+        }
+    });
+
+    const expected = {
         hello: {
             world: 'anyone',
             cloud: true