fix #2: add flag --create-config to create a default config

README.md

@@ -98,20 +98,12 @@ Options:
 
 ## Reading mobi files
 
-`epuppy`   doesn't   support  mobi   files,   but   you  can easily
-convert them to epub format using calibre, which contains a tool named
-`ebook-convert`. You can install it on Ubuntu with:
-
-`apt install calibre`
-
-On Fedora use:
-
-`dnf install ebook-tools`
-
-To convert, execute: 
+`epuppy`   doesn't   support  mobi   files,   but   you  can   install
+[mobitool](https://github.com/bfabiszewski/libmobi/)  and  use  it  to
+convert mobi files to epub. The ubuntu package is `libmobi-tools`. To convert, execute: 
 
 ```default
-ebook-convert somebook.mobi somebook.epub
+mobitool -e somebook.epub
 ```
 
 ## Installation