Added prefix option for agents

[Thann]

This prevents users from having to repeat themselves in tests, by setting a common prefix for all routes.

[mikelax]

I think this should be closed in favor of #453

[Thann]

These two PRs provide different features

[mikelax]

@Thann yes you are right.
Let me give this some thought as I want to make sure if we start extending capabilities with extra "options" we do so in a way to keep the object Prototype manageable. I think along the lines of what you have with the optional options object is the way to go.

[oprogramador]

could you provide a successful test (e.g. with 200 status code) as well?

[Thann]

Oh yeah, I can't believe I didn't do that already!

[coveralls]

Pull Request Test Coverage Report for Build 407

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+1.8%) to 99.111%

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Totals
Change from base Build 404:	1.8%
Covered Lines:	141
Relevant Lines:	142

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 407

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+1.8%) to 99.111%

---

Totals
Change from base Build 404:	1.8%
Covered Lines:	141
Relevant Lines:	142

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💛 - Coveralls