Add composer file

Author: sirbrillig

.gitignore

@@ -2,3 +2,4 @@ util/
 mybuild
 mytest
 myrun
+/vendor/

composer.json

@@ -0,0 +1,17 @@
+{
+    "name": "sirbrillig/phpcs-variable-analysis",
+    "description": "A PHPCS sniff to detect problems with variables.",
+    "type": "phpcodesniffer-standard",
+    "license": "BSD",
+    "require" : {
+        "php" : ">=5.4.0",
+        "squizlabs/php_codesniffer" : "^3.0.2"
+    },
+    "authors": [
+        {
+            "name": "Payton Swick",
+            "email": "[email protected]"
+        }
+    ],
+    "require": {}
+}