README: add more detailed informations

README.md

@@ -1,6 +1,16 @@
 # Bisc
 
-### A small tool that clears qutebrowser cookies
+### A small tool that clears cookies (and more)
+
+Websites can store unwanted data using all sorts of methods: besides
+the usual cookies, there are also the local and session storage, the
+IndexedDB API and more caches as well.
+
+bisc will try to go through each of them and remove all information from
+websites that are not explicitly allowed (ie. a whitelist of domains).
+It was created for qutebrowser, but it actually supports the storage
+format used by Chromium-based browsers, which (sadly) means almost
+every one nowadays.
 
 ## Installation
 
@@ -23,8 +33,6 @@ Finally, statically compiled binaries can be found in the
 [cabal]: https://github.com/haskell/cabal/blob/master/cabal-install/README.md
 [stack]: https://docs.haskellstack.org/en/stable/README/
 
-
-
 ## Configuration
 
 The bisc configuration file is `$XDG_CONFIG_HOME/bisc/bisc.conf`.
@@ -48,6 +56,10 @@ example.com
 
 Run `bisc` to delete all non-whitelisted data from qutebrowser.
 
+Note that running bisc while the browser is open is not safe: meaning it
+could possibly corruption the databases. However, it has never happened
+or has been reported to me.
+
 ## License
 
 Copyright (C) 2021 Michele Guerini Rocco
@@ -59,7 +71,7 @@ the Free Software Foundation, either version 3 of the License, or
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License