small typos

[Selithrarion]

1. desaster -> disaster? https://github.com/guipsamora/pandas_exercises/tree/master/07_Visualization/Titanic_Desaster

2. % matplolib inline -> %matplotlib inline https://github.com/guipsamora/pandas_exercises/blob/master/07_Visualization/Tips/Exercises_with_code_and_solutions.ipynb

3. step 2 address is not raw.githubusercontent.com as it was before but just github.com so it gives an error when using pd.read_csv https://github.com/guipsamora/pandas_exercises/blob/master/06_Stats/Wind_Stats/Exercises_with_solutions.ipynb

4. step 3 missing variable name https://github.com/guipsamora/pandas_exercises/blob/master/09_Time_Series/Investor_Flow_of_Funds_US/Exercises_with_code_and_solutions.ipynb

[RyanLatimer]

I created a pull request correcting the first issue. Issues 2 and 3 have already been corrected by another developer. Issue 4 occurs when when the cell that includes the code:

import pandas as pd

is not run before step 3. When you run all cells, it runs perfectly fine.