Add GlusterFS under Distributed Filesystems (#647)

README.md

@@ -475,6 +475,7 @@ Some [Groupware](#groupware) solutions also feature file sharing and synchroniza
 #### Distributed filesystems
 
   * [Camlistore](https://camlistore.org/) - Camlistore is a set of open source formats, protocols, and software for modeling, storing, searching, sharing and synchronizing data in the post-PC era. Data may be files or objects, tweets or 5TB videos, and you can access it via a phone, browser or FUSE filesystem. ([Source Code](https://github.com/camlistore/camlistore)) `Apache` `Go`
+  * [GlusterFS](https://www.gluster.org) - GlusterFS is a scalable network filesystem. Using common off-the-shelf hardware, you can create large, distributed storage solutions for media streaming, data analysis, and other data- and bandwidth-intensive tasks. ([Source Code](https://github.com/gluster/glusterfs)) `LGPLv3/GPLv2` `C`
   * [Go IPFS](https://github.com/ipfs/go-ipfs) - Implementation of [IPFS](http://ipfs.io/), a global, versioned, peer-to-peer filesystem that seeks to connect all computing devices with the same system of files. It combines good ideas from Git, BitTorrent, Kademlia, SFS, and the Web. It is like a single bittorrent swarm, exchanging git objects.
   * [Ori Filesystem](http://ori.scs.stanford.edu/) - A Secure Distributed File System built for offline operation. ([Source Code](https://bitbucket.org/orifs/ori/wiki/Home)) `MIT` `C++`
   * [Swift](http://docs.openstack.org/developer/swift/) - A highly available, distributed, eventually consistent object/blob store.