fixed filters for time_entry list

[colkito]

Added filters for list of time_entry

[heyheyjp]

@colkito: thanks so much for the PR. Unfortunately, I don't have time to maintain this repo. If you're interesting in taking it over, let me know and we can talk transfer. :)

[colkito]

Hi @prattsj thanks to you for your awesome work!
I created a new version of this module (I needed it with urgency) https://github.com/hashdog/node-freshbooks-api
If you want, you could put in your README file a message to redirect the users to the new module. I'll maintain it.

greetings!