add ymarks (bookmarks synchronisation)

fix firefox sync/auth/content server indentation

README.md

@@ -195,6 +195,7 @@ See also [Static Site Generators](#static-site-generators), [Content Management
   * [SemanticScuttle](http://semanticscuttle.sourceforge.net/) - SemanticScuttle is a social bookmarking tool experimenting with features like structured tags and collaborative tag descriptions. ([Source Code](https://sourceforge.net/p/semanticscuttle/code/ci/master/tree/)) `GPLv2` `PHP`
   * [Shaarli](https://github.com/shaarli/Shaarli) - Personal, minimalist, super-fast, no-database bookmarking and link sharing platform. ([Demo](https://demo.shaarli.org)) `Zlib` `PHP`
   * [unmark](https://github.com/plainmade/unmark) - An open source to do app for links. `MIT` `PHP`
+  * [ymarks](https://bitbucket.org/ymarks/ymarks-server) - Keep your browser's bookmarks synchronized without limiting yourself to one provider. `WTFPL` `C`
 
 ## Calendar and Address Books