Make 'rc.path' absolute

[dunkmann00]

I went ahead and implemented the suggestion by @vweevers. This will make rc.path an absolute path.

This fixes #157.

[vweevers]

I would prefer to do it here:

prebuild-install/rc.js

Lines 45 to 47 in cca87fb

	if (rc.path === true) {
	delete rc.path
	}

So that we don't modify rc outside of rc. Along the lines of:

rc.path = path.resolve(rc.path === true ? '.' : rc.path || '.')

[vweevers]

Can you update this test accordingly?

prebuild-install/test/rc-test.js

Lines 33 to 34 in cca87fb

	t.equal(rc.path, '../some/other/path', 'correct path')
	t.equal(rc.path, rc.p, 'path alias')

[dunkmann00]

I just saw that after I pushed it, I'll take a look!

What should I set as the correct path? Running the tests on Github vs locally will result in a different value for path.

[vweevers]

It's OK to use path.resolve('../some/other/path') in the test as well. Or more precisely (because the test uses a random temporary directory as the working directory): path.resolve(tmp, '../some/other/path'). One way to get that tmp variable is to pass it to the callback here:

prebuild-install/test/rc-test.js

Line 149 in cca87fb

cb(result)

I.e. cb(result, tmp)

[vweevers]

6.1.4. Thanks!