Merge pull request #993 from stevebauman/patch-1

Exclude `.github` folder and `.php_cs` from being included in composer installation

Author: freekmurze

.gitattributes

@@ -4,10 +4,12 @@
 * text eol=lf
 
 # Ignore all test and documentation with "export-ignore".
+/.github            export-ignore
 /.gitattributes     export-ignore
 /.gitignore         export-ignore
 /.travis.yml        export-ignore
 /phpunit.xml.dist   export-ignore
+/.php_cs.dist.php   export-ignore
 /.scrutinizer.yml   export-ignore
 /tests              export-ignore
 /.editorconfig      export-ignore