Better error handling

[Technohacker]

For issue #5
Functions now throw Error objects instead of returning nulls

Potential issues:

• Errors from request-promise and airbnbapi are both given back to the caller. More code may be necessary to give a unified interface
• This would very likely be a breaking API change

This PR isn't intended to be merged right away until reviewed for more issues

[coveralls]

Pull Request Test Coverage Report for Build 50

• 99 of 119 (83.19%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+6.9%) to 77.358%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
build/main.js	98	118	83.05%

Files with Coverage Reduction	New Missed Lines	%
build/log.js	1	47.83%

Totals
Change from base Build 49:	6.9%
Covered Lines:	217
Relevant Lines:	278

---

💛 - Coveralls

[zxol]

That's brilliant! Thank you!

It looks like you may have edited the build files instead of the pre-babelised source code in the src directory. Totally understandable as I have neglected to write a contribution guide. My apologies.

How would you like to proceed?

[Technohacker]

I've updated both (source then babelize), it's just that I didn't notice a gitignore for the build directory so I thought you kept both updated together 😅

The only commit that affects the build files would be the last one so the rest can be used instead :D

[zxol]

Ahh sorry, Understood.

[zxol]

Did you write a script to help you refactor the code? I'm curious about your approach to the problem.

[Technohacker]

To be honest I was changing lines manually 🤣
I used Atom so for a majority of the lines I used multi-cursor editing :)

[zxol]

Nice :)

[zxol]

I'll review this carefully and try to make some additions as well, prior to merging. Perhaps we should notify the users about an upcoming API surface change, too.

[Technohacker]

Yes that's a good idea. I'll keep building with the API and add more endpoints if necessary so all of it can be made into one release :)

[zxol]

Sounds good. I'm really glad to have a collaborator on the project.

[Jacob-Cozens]

Very cool.