Support for L5.7

Enabled support for L5.7
Dropped support for L5.5
Fixed some typo in README
Removed useless PHPUnit configuration setting (https://stackoverflow.com/questions/44328114/phpunit-what-does-syntaxcheck-configuration-parameter-stands-for-exactly?rq=1)

Author: nullthoughts

README.md

@@ -1,5 +1,5 @@
-# Create CloudFront signed URLs in Laravel 5.5+
-Easy to use Laravel 5.5+ wrapper around the official AWS PHP SDK which allows to sign URLs to access Private Content through CloudFront CDN
+# Create CloudFront signed URLs in Laravel 5.6+
+Easy to use Laravel 5.6+ wrapper around the official AWS PHP SDK which allows to sign URLs to access Private Content through CloudFront CDN
 
 Inspired by [laravel-url-signer](https://github.com/spatie/laravel-url-signer)
 
@@ -56,16 +56,11 @@ return [
      */
     'key_pair_id' => env('CLOUDFRONT_KEY_PAIR_ID', ''),
 
-    /*
-     * AWS region to connect to.
-     */
-    'region' => env('AWS_DEFAULT_REGION', 'us-west-2'),
-
     /*
      * CloudFront API version, by default it uses the latest available.
      */
     'version' => env('CLOUDFRONT_API_VERSION', 'latest'),
-    
+
 ];
 ```
 ## Usage
@@ -114,4 +109,4 @@ If you discover any security related issues, please email [email protected]
 
 ## License
 
-The MIT License (MIT). Please see [License File](LICENSE.md) for more information.
+The MIT License (MIT). Please see [License File](LICENSE.md) for more information.

composer.json

@@ -18,8 +18,8 @@
         }
     ],
     "require": {
-        "php" : "^7.1",
-        "illuminate/support": "~5.5.0|~5.6.0",
+        "php" : "^7.1.3",
+        "illuminate/support": "~5.6.0|~5.7.0",
         "aws/aws-sdk-php": "^3.52"
     },
     "require-dev": {

config/cloudfront-url-signer.php

@@ -22,4 +22,4 @@
      */
     'version' => env('CLOUDFRONT_API_VERSION', 'latest'),
 
-];
+];

phpunit.xml.dist

@@ -7,8 +7,7 @@
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="false"
-         stopOnFailure="false"
-         syntaxCheck="false">
+         stopOnFailure="false">
     <testsuites>
         <testsuite name="Package Test Suite">
             <directory>./tests/</directory>