Added json lesson plan link to lesson list.
modified lesson plan and readme for first iteration of lesson
Merge branch 'master' of https://github.com/PyClass/PyClass-lesson-plans
moved ipython notebook to 3_functional_and_control folder
added ipython notebook gist link at very top
Added utf-8 to func_lesson.py
Added PSA for today to readme.md
Began work on lesson 4.
Reformatted lesson 4 beginning.
Moved on to part 2.
Fixed part 2 formatting.
Completed part 2.
reformatted 4.2
reformatted 4.2
Completed 4.3