add/update composer scripts

Author: Koopzington

composer.json

@@ -43,5 +43,16 @@
     },
     "provide": {
         "container-interop/container-interop-implementation": "^1.1"
+    },
+    "scripts": {
+        "check": [
+            "@cs-check",
+            "@test"
+        ],
+        "cs-check": "phpcs",
+        "cs-fix": "phpcbf",
+        "test": "phpunit --colors=always",
+        "test-coverage": "phpunit --colors=always --coverage-clover clover.xml",
+        "upload-coverage": "coveralls -v"
     }
 }