build: update changes in .git* files

Update latest changes in .gitattributes and .gitignore files.

Closes #1

Author: josantonius

.gitattributes

@@ -0,0 +1,11 @@
+/.github export-ignore
+/tests export-ignore
+/docs export-ignore
+CHANGELOG.md export-ignore
+phpcs.xml export-ignore
+phpunit.xml export-ignore
+phpmd.xml export-ignore
+phpdoc.xml export-ignore
+.gitattributes export-ignore
+.gitignore export-ignore
+.php-cs-fixer.dist.php export-ignore

.gitignore

@@ -1,12 +1,13 @@
-.git*/
 vendor/
-docs/*.pyc
-docs/_build
-build/artifacts/
+coverage/
+.vscode/
+docs/cache/
 composer.phar
 composer.lock
 composer-test.lock
 phpcbf-fixed.diff
-.idea
-.DS_STORE
-.php_cs.cache
+.php_cs.cache
+php-language-code.code-workspace
+.repository.md
+.phpunit.result.cache
+coverage.xml