Clean up whitespace

	modified:   weather_app/www/templates/index.html
CHECKPOINT/EXERCISE Add API call and error page for failed API call

- Use python requests package (pip install requests) to handle the
	API call nicely
- Minimal information pulled from the API response and displayed
- As an exercise, fellows can use what they've learned so far
	to make a prettier weather display with more useful
	information in it

	new file:   weather_app/get_weather.py
	modified:   weather_app/www/routes.py
	new file:   weather_app/www/templates/error.html
	modified:   weather_app/www/templates/location_weather.html