[weather] Add humidity data after temperature

patch adds humidity data to weather output.
sample output:
`Yahoo! Weather - Newton, MA: Mostly Cloudy, 31°C (87°F) - 55%, 29in (1008mb), Moderate breeze 6.3m/s (↓)`
[weather] Remove pressure and label humidity
[weather] capitalize humidity in output
Merge branch 'patch-2' of https://github.com/firerogue/willie into firerogue-patch-2
Merge branch 'firerogue-patch-2'

Long overdue.