Improve repo

Author: andrey-tech

.gitattributes

@@ -1,2 +1,8 @@
-# Auto detect text files and perform LF normalization
 * text=auto
+/assets/pdepend-summary-formatter-social.png export-ignore
+/.gitattributes                              export-ignore
+/.gitignore                                  export-ignore
+/phpcs.xml.dist                              export-ignore
+/phplint.xml.dist                            export-ignore
+/phpmd.xml.dist                              export-ignore
+/psalm.xml.dist                              export-ignore

assets/pdepend-summary-formatter-social.png

@@ -43,6 +43,9 @@
     "conflict": {
         "pdepend/pdepend": "<2.15"
     },
+    "suggest": {
+        "phpmd/phpmd": "PHPMD is a spin-off project of PHP Depend"
+    },
     "config": {
         "sort-packages": true,
         "allow-plugins": {