Adding option for Kelvin degrees, fixing typos, removing odd whitespaces and commas in arrays.
Updated the first parameter of a plotly object to "username_or_email".

The former parameter name "username" was causing the error:

  File "/var/www/PiTemp/update_plotly.py", line 18, in <module>
    update_temp(date,temp)
  File "/var/www/PiTemp/update_plotly.py", line 7, in update_temp
    py = plotly.plotly(username='usename', key='key')
TypeError: __init__() got an unexpected keyword argument 'username'