Merge pull request #57 from erikn69/patch-1

Update .gitattributes

Author: freekmurze

.gitattributes

@@ -2,11 +2,14 @@
 # https://www.kernel.org/pub/software/scm/git/docs/gitattributes.html
 
 # Ignore all test and documentation with "export-ignore".
-/.gitattributes     export-ignore
-/.gitignore         export-ignore
-/phpunit.xml.dist   export-ignore
-/tests              export-ignore
-/.editorconfig      export-ignore
-/.php_cs            export-ignore
-/.github            export-ignore
-
+/.github                 export-ignore
+/.gitattributes          export-ignore
+/.gitignore              export-ignore
+/phpunit.xml.dist        export-ignore
+/psalm.xml.dist          export-ignore
+/tests                   export-ignore
+/.editorconfig           export-ignore
+/.php-cs-fixer.dist.php  export-ignore
+/art                     export-ignore
+/docs                    export-ignore
+/UPGRADING.md            export-ignore