docs(*): add documentation for null cases, and format with prettier

Author: ultrox

README.md

@@ -1,21 +1,25 @@
+# pkginfo
 [![Build Status](https://travis-ci.org/ultrox/pkginfo.svg?branch=master)](https://travis-ci.org/ultrox/pkginfo)
 [![version](https://img.shields.io/npm/v/@ma.vu/pkginfo.svg?style=flat-square)](http://npm.im/@ma.vu/pkginfo)
 [![MIT License](https://img.shields.io/npm/l/pkginfo.svg?style=flat-square)](http://opensource.org/licenses/MIT)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg?style=flat-square)](https://github.com/semantic-release/semantic-release)
 [![Renovate - Always up to date][renovateapp-svg]][renovateapp-link]
+[![Coverage Status](https://coveralls.io/repos/github/ultrox/pkginfo/badge.svg?branch=master)](https://coveralls.io/github/ultrox/pkginfo?branch=master)
+
+Flexible api to fetch npm package info
 
 [renovateapp-link]: https://renovatebot.com/dashboard#github/ultrox/pkginfo
 [renovateapp-svg]: https://img.shields.io/badge/always-up_to_date-brightgreen.svg
 
 ## Install
 
-
 #### NPM
+
 `npm install @ma.vu/pkginfo`
 
 #### YARN
-`yarn add @ma.vu/pkginfo`
 
+`yarn add @ma.vu/pkginfo`
 
 ## Usage
 
@@ -38,7 +42,7 @@ pkginfo('got').then(data => console.log(data))
 
 ## Override Defaults
 
-You are able to specify what you get in output. 
+You are able to specify what you get in output.
 
 NOTE: It will completely override defaults
 
@@ -57,7 +61,6 @@ devDependencies => Int
 dependencies    => Int
 ```
 
-
 ```javascript
 const pkginfo = require('@ma.vu/pkginfo')
 
@@ -77,8 +80,8 @@ info('got', [
      devDependencies: 16
    }
 */
-
 ```
+
 ### Require Exact version
 
 It accepts object, and exact version of package you fetching, and now `version`
@@ -111,7 +114,15 @@ Rationale for this is, if you query db and query can't yield the result, you
 will get null, error will not be thrown. The same is for version
 
 ```javascript
-info('not-existing-package-name').then(data => console.log())
+info('not-existing-package-name').then(data => console.log(data))
+/* 
+   null
+*/
+```
+
+#### Version does not exists
+```javascript
+info({name: 'react', version: '100.0.0'}).then(data => console.log(data))
 /* 
    null
 */