fix #3:

- clean mobi page breaks
- reorganize the code a little
- avoid for duplicate sections

README.md

@@ -96,6 +96,16 @@ Options:
 -v --version             show program version
 ```
 
+## Reading mobi files
+
+`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
+mobitool -e somebook.epub
+```
+
 ## Installation
 
 The tool does not have any dependencies.  Just download the binary for