README needs to update detail of i3blocks-contrib config file

[ubunux]

In README file, configure described as below. However, I found that in i3blocks-contrib it's necessary to config command=$SCRIPT_DIR/$BLOCK_NAME line to work. My OS is Ubuntu 16.04 and i3blocks is v1.5.

For the lazy, you can start from our collection of scripts:

git clone https://github.com/vivien/i3blocks-contrib ~/.config/i3blocks cd !$ cp config.example config

[carreter]

Notably, you also have to individually copy over the individual blocklet scripts to a chosen directory (~/.local/bin/i3blocks in my case) and then appropriately replace the $SCRIPTS_DIR bit in config.example.

This seems to be causing some confusion for new users (including me), see this issue over on i3blocks-contrib: https://github.com/vivien/i3blocks-contrib/issues/255

Happy to put in a PR, but it seems like this repo is unmaintained...