Update gitignore and gitattributes.

.gitattributes

@@ -0,0 +1,10 @@
+.check-author.yml export-ignore
+.gitattributes export-ignore
+.github export-ignore
+.gitignore export-ignore
+.travis.yml export-ignore
+build.default.properties export-ignore
+build.xml export-ignore
+phpunit.xml.dist export-ignore
+/tests export-ignore
+/specs export-ignore

.gitignore

@@ -1,8 +1,24 @@
-/vendor/
+# OS
-/bin/
+.DS_Store
-/.tx/
+Thumbs.db
-/node_modules/
+.directory
 
-coverage.xml
+# IDEs 
+.buildpath
+.project
+.settings/
+.build/
+.external*/
+.idea/
+nbproject/
 
+# composer related
+vendor/
 composer.lock
+
+# build
+build/
+build.properties
+
+# Translations
+.tx