Update PHPCS to 2.8

composer.json

@@ -18,7 +18,7 @@
   },
   "require-dev": {
     "symfony/var-dumper": "~3.2.0",
-    "squizlabs/php_codesniffer": "~2.7.0",
+    "squizlabs/php_codesniffer": "~2.8.0",
     "phpunit/phpunit": "~5.7.2",
     "ffmpeg/ffmpeg": "dev-release",
     "rg3/youtube-dl": "~2017.03.07",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "1ac742cf7c2832a7af628c157ced2dbc",
+    "content-hash": "c3f8122650f9ab9d3c19dffeefaf6e9c",
     "packages": [
         {
             "name": "aura/session",
@@ -2254,16 +2254,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "2.7.1",
+            "version": "2.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
-                "reference": "9b324f3a1132459a7274a0ace2e1b766ba80930f"
+                "reference": "d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/9b324f3a1132459a7274a0ace2e1b766ba80930f",
-                "reference": "9b324f3a1132459a7274a0ace2e1b766ba80930f",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d",
+                "reference": "d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d",
                 "shasum": ""
             },
             "require": {
@@ -2328,7 +2328,7 @@
                 "phpcs",
                 "standards"
             ],
-            "time": "2016-11-30T04:02:31+00:00"
+            "time": "2017-03-01T22:17:45+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",