Fixed A Byte of Python book entry (EbookFoundation#2257)

- Renamed book to A Byte of Python
- Fixed book ordering
- Changed link to https
- Fixed Python version (3.x)
- Added available formats

free-programming-books.md

@@ -1761,13 +1761,13 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 ### Python
 
 * [A Beginner's Python Tutorial](https://en.wikibooks.org/wiki/A_Beginner%27s_Python_Tutorial)
+* [A Byte of Python](https://python.swaroopch.com) (3.x) (HTML, PDF, EPUB, Mobi)
 * [A Guide to Python's Magic Methods](https://github.com/RafeKettler/magicmethods) - Rafe Kettler
 * [A Whirlwind Tour of Python](http://www.oreilly.com/programming/free/files/a-whirlwind-tour-of-python.pdf) - Jake VanderPlas (PDF) [(EPUB, MOBI)](http://www.oreilly.com/programming/free/a-whirlwind-tour-of-python.csp?download=yes)
 * [Automate the Boring Stuff](http://automatetheboringstuff.com/chapter0/) - Al Sweigart
 * [Biopython](http://biopython.org/DIST/docs/tutorial/Tutorial.pdf) (PDF)
 * [Building Skills in Object-Oriented Design (Python)](http://www.itmaybeahack.com/book/oodesign-python-2.1/latex/BuildingSkillsinOODesign.pdf) (PDF) (2.1.1)
 * [Building Skills in Python](http://www.itmaybeahack.com/book/python-2.6/latex/BuildingSkillsinPython.pdf) (PDF) (2.6)
-* [Byte of Python](http://python.swaroopch.com) (3.5.1)
 * [Code Like a Pythonista: Idiomatic Python](http://python.net/~goodger/projects/pycon/2007/idiomatic/handout.html)
 * [CodeCademy Python](https://www.codecademy.com/learn/python)
 * [Composing Programs](http://composingprograms.com) (3.x)