Merge pull request #3 from savinmikhail/master

Remove unused files in distribution not ignored for export in gitignore

Author: maks-rafalko

.gitattributes

@@ -0,0 +1,8 @@
+/composer.lock export-ignore
+/phpunit.xml export-ignore
+/.gitignore export-ignore
+/.github export-ignore
+/Makefile export-ignore
+/docs export-ignore
+/.php-cs-fixer.php export-ignore
+/tools export-ignore