Before this commit, the name of the bot had to be hard coded into every
plugin. Now, the name of the bot to which it should be sensitive can be
set in the global config.hjson.
Furthermore, the default sensitivity of a plugin is only recognized at
the beginning of a sentence and is case insensitive.
Finally, the possibility to add aliases for plugins is added.
This commit adds a convenient installation script for Linux and also
adds a description on how to install the bot.
Furthermore, a very simple example plugin is added. This way, new users
can easily discover the possibilities of this plugin.
Finally, the default character "Peter"---which is used within
Alcuinus---is removed, and a more generic character is added.
