Add more on Seaborn palettes; add poll feedback results; fix PDF

Introduction-to-Pandas--JURECA--solution.ipynb

Introduction-to-Pandas--JURECA--tasks.ipynb

Introduction-to-Pandas--master.ipynb

Introduction-to-Pandas--slides.html

Introduction-to-Pandas--slides.ipynb

Introduction-to-Pandas--slides.pdf

Introduction-to-Pandas--solution.ipynb

Introduction-to-Pandas--tasks.ipynb

Makefile

img/poll-results.png