Add examples for missing submission endpoints

[vprusso]

In the /examples directory, the following submission API endpoints have explicit examples:

• submission_get
• submission_delete
• submission_add
• submission_update
• submission_upvote

The following do not and would need an example file:

• submission_add_method
• submission_add_task
• submission_add_tag

[WingCode]

@vprusso I would like to take a stab at this issue. Could you assign it to me?

[AnushkaKundu]

@vprusso I would like to work on this issue. Can you assign it to me?

[vprusso]

Hi @AnushkaKundu. It looks like @WingCode is currently assigned to this task.

[natestemen]

Hey @AnushkaKundu! Just because someone is assigned, does not mean it's their bounty! Bounties are not finalized until a contribution has been accepted and a an issue closed. Being assigned is only a proxy for interest.

It does look like in this case that @WingCode has opened a PR, so maybe you don't want to take a stab at this one (or maybe you do!), but just wanted to provide info.

@vprusso you can assign many people, or no one, to an issue until it is closed.

[vprusso]

@natestemen sure, assigned @AnushkaKundu as well.

[vprusso]

Actually, I looked at the PR, and it's good to go. I think it would be unfair to assign @AnushkaKundu to this particular issue as @WingCode has completed the task. fyi @natestemen does that make sense?

[natestemen]

Yup, if WingCode has completed the bounty alone, then they will need to be the only assignee when the issue is closed.