Add Zuplo to Resources

[AdrianMachado]

Please ensure your pull request adheres to the following guidelines:

• [X] Search previous suggestions before making a new one, as yours may be a duplicate.
• [X] Make an individual pull request for each suggestion.
• [X] Titles should be capitalized.
• [X] Keep descriptions short and simple.
• [X] End all descriptions with a full stop/period.
• [X] Check your spelling and grammar.
• [X] Make sure your text editor is set to remove trailing whitespace.
• [X] Try to make your Pull request and title as descriptive as possible.
• [X] Mark open source APIs with the open source icon
• [X] Mark all trial/demo based APIs with the 💸 emoticon.
• [X] Keep the APIs sorted alphabetically.
• [X] Whenever possible link directly to the documentation page!

[AdrianMachado]

@n0shake - any chance you can review?