Merge pull request #87 from unixorn/add-rake-link

Add rake link, strip trailing spaces

README.md

@@ -75,6 +75,7 @@
 * [Bazel](http://bazel.io/) - Google's build system.
 * [GNU Make](http://www.gnu.org/software/make/) - The most popular automation build tool for many purposes.
 * [Gradle](http://gradle.org/) - Another build automation system.
+* [Rake](https://github.com/ruby/rake) - Build automation tool similar to Make, written in and extensible in Ruby.
 
 ## Backups
 *Backup software.*
@@ -539,7 +540,7 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
 *Operating system–level virtualization.*
 
 * [Docker](http://www.docker.com/) - Platform for developers and sysadmins to build, ship, and run distributed applications.
-* [LXC](https://linuxcontainers.org/lxc/) -  Userspace interface for the Linux kernel containment features. 
+* [LXC](https://linuxcontainers.org/lxc/) - Userspace interface for the Linux kernel containment features.
 * [OpenVZ](http://openvz.org) - Container-based virtualization for Linux.
 
 ## SSH