replaced TRK with grml (former is dead)

README.md

@@ -597,9 +597,9 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
 ## Troubleshooting
 *Troubleshooting Tools.*
 
++ [grml](https://grml.org) – bootable Debian Live CD with powerful CLI tools.
 * [mitmproxy](http://mitmproxy.org/) - A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems.
 * [Sysdig](http://www.sysdig.org/) - Capture system state and activity from a running Linux instance, then save, filter and analyze.
-* [Trinity Rescue Kit](http://trinityhome.org) - Linux Live CD for general computer troubleshooting.
 * [Wireshark](http://www.wireshark.org/) - The world's foremost network protocol analyzer.
 
 ## Version control