Instructor notes out of date with episodes

[SJaffa]

python-ecology-lesson/instructors/instructor-notes.md

Lines 28 to 34 in 535175e

	## 07-visualization-ggplot-python
	iPython notebooks for plotting can be viewed in the `learners` folder.
	## 08-putting-it-all-together
	Answers are embedded with challenges in this lesson,

These sections of the instructor notes don't seem to match up with the episode numbers as they are, we might need to dig through the Git history to match up what bits they were referring to.