Merging upstream version 1.11.1+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# Updating netdata after its installation
+
+![image8](https://cloud.githubusercontent.com/assets/2662304/14253735/536f4580-fa95-11e5-9f7b-99112b31a5d7.gif)
+
+
+We suggest to keep your netdata updated. We are actively developing it and you should always update to the latest version.
+
+The update procedure depends on how you installed it:
+
+## You downloaded it from github using git
+
+### Manual update
+
+The installer `netdata-installer.sh` generates a `netdata-updater.sh` script in the directory you downloaded netdata. 
+You can use this script to update your netdata installation with the same options you used to install it in the first place.
+Just run it and it will download and install the latest version of netdata. The same script can be put in a cronjob to update your netdata at regular intervals.
+
+```sh
+# go to the git downloaded directory
+cd /path/to/git/downloaded/netdata
+
+# run the updater
+./netdata-updater.sh
+```
+
+_Netdata will be restarted with the new version._
+
+If you don't have this script (e.g. you deleted the directory where you downloaded netdata), just follow the **[[Installation]]** instructions again. The installer preserves your configuration. You can also update netdata to the latest version by hand, using this:
+
+```sh
+# go to the git downloaded directory
+cd /path/to/git/downloaded/netdata
+
+# download the latest version
+git pull
+
+# rebuild it, install it, run it
+./netdata-installer.sh
+```
+
+_Netdata will be restarted with the new version._
+
+Keep in mind, netdata may now have new features, or certain old features may now behave differently. So pay some attention to it after updating.
+
+### Auto-update
+
+_Please, consider the risks of running an auto-update. Something can always go wrong. Keep an eye on your installation, and run a manual update if something ever fails._
+
+You can call `netdata-updater.sh` from a cron-job. A successful update will not trigger an email from cron. 
+
+```sh
+# Edit your cron-jobs
+crontab -e
+
+# add a cron-job at the bottom. This one will update netdata every day at 6:00AM:
+# update netdata
+0 6 * * * /path/to/git/downloaded/netdata/netdata-updater.sh
+```
+
+## You downloaded a binary package
+
+If you installed it from a binary package, the best way is to **obtain a newer copy** from the source you got it in the first place.
+
+If a newer version of netdata is not available from the source you got it, we suggest to uninstall the version you have and follow the **[[Installation]]** instructions for installing a fresh version of netdata.
+
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