include commands to mirror locally

maybe better use ``wget -mk -w 10 http://path.to.the/page.html`` to be nice?
Adding two invaluable commands to tmux cheatsheet

* Detaching an already attached tmux session - great for when you are moving from a phone for example to a laptop and want to utilise the whole real estate you have.
* Reloading the configuration file on the fly by using the colon menu
Update wget
Update wget
- Cheatsheets added for a couple of my favourite commands:
   - rsync: file copy and backup multi-tool
   - indent: one liner to nicely format C/C++ source.
[TCPDUMP] Add cheats for tcpdump
[TCPDUMP] add new cheat