Added "Pick/Basic: A Programmer's Guide - Jonathan E. Sisk", under Basic.
Fixed "CodeCademy Python" spelling to "CodeAcademy Python", under Python.
Added book to Basic - Pick/Basic: A Programmer's Guide.
Merge pull request #1211 from eclutsk/free-programming-books.md

Added "Pick/Basic: A Programmer's Guide - Jonathan E. Sisk", under Basic...