Update readme

Author: iranianpep

README.md

@@ -10,23 +10,33 @@ A simple wrapper for Dark Sky API
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/iranianpep/darksky/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/iranianpep/darksky/?branch=master)
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 [![License](https://poser.pugx.org/darksky/darksky/license)](https://packagist.org/packages/darksky/darksky)
-[![StyleCI](https://styleci.io/repos/95418474/shield?branch=master)](https://styleci.io/repos/96892746)
+[![StyleCI](https://styleci.io/repos/96892746/shield?branch=master)](https://styleci.io/repos/96892746)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/8575ff8e33034e0a81cedd9464ac359a)](https://www.codacy.com/app/iranianpep/darksky?utm_source=github.com&utm_medium=referral&utm_content=iranianpep/darksky&utm_campaign=Badge_Grade)
 [![Packagist](https://img.shields.io/packagist/dt/darksky/darksky.svg)](https://packagist.org/packages/darksky/darksky)
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+## Server Requirements
+- PHP >= 7.0.0
+
 ## Usage
-- Get the API key
+- Get the API key from https://darksky.net/dev
 - Install this package in your project:<br> `composer require darksky/darksky`
 - To forecast
 ```
-$darksky = new Darksky('API_KEY', 'LAT', 'LONG');
-$result = $darksky->forcast();
+try {
+    $darksky = new Darksky('API_KEY', 'LAT', 'LONG');
+    $result = $darksky->forcast();
+} catch(Exception $e) {
+    // handle the exception
+}
 ```
 
-Or:
-
+- To use the time machine
 ```
-$darksky = new Darksky('API_KEY', 'LAT', 'LONG');
-$result = $darksky->timeMachine('UNIX_TIME');
+try {
+    $darksky = new Darksky('API_KEY', 'LAT', 'LONG');
+    $result = $darksky->timeMachine('UNIX_TIME');
+} catch(Exception $e) {
+    // handle the exception
+}
 ```

src/Darksky/Darksky.php

@@ -132,8 +132,9 @@ public function setLongitude($longitude)
     }
 
     /**
-     * @param array $exclude
-     * @param bool  $extend
+     * @param array  $exclude
+     * @param bool   $extend
+     * @param string $time
      *
      * @return string
      */