Adding option to disable automatic decompression

[sazzy4o]

Issue

Sometimes you do not want the response body of an http request automatically decompressed. For example if you are immediately storing response body or are passing response body on to to another service. Closed #2153.

Solution

Add a parameter to config to allow developer to disable automatic decompression

Change summary

• Add check to see if automatic decompression is disabled in config
• Add decompress to config typing
• Update README
• Fix lint error in unit tests (reverted)
• Add unit test for new decompress parameter

It has been pointed out that this feature may not be accepted since it only applies to Node.js, but this is an extremely useful feature, so I think it should be included in the official axios package

Please let me know if there is anything that I should change

[Fonger]

When will this feature release? It's documented on README but the latest release 0.19.2 doesn't include this feature.

[svonderohe]

@Fonger I am not sure when the next release will be. This was merged in shortly after the last release. If you want to use this feature now, fork axios and add your fork as the package version for axios in package.json like this:

	"dependencies": {
		"axios": "git://github.com/sazzy4o/axios.git#master"
	}