fix indent, replace tabs with spaces

[risseraka]

NPM scripts' paths to binaries have also been fixed to avoid having to npm install -g everything.
Hope it pleases you.
Cheers!

Protip: you can visualize changes ignoring whitespace at https://github.com/pierreinglebert/json-merge-patch/pull/6/files?w=1.

[pierreinglebert]

You don't have to install them globally, only in devDependencies. npm adds the ./node_modules/.bin to your PATH before running scripts (it also has the priority).

./node_modules/.bin/eslint --version
v1.10.0
eslint --version
v2.2.0
(add "eslint --version" to package.json under scripts.eslintv)
npm run eslintv
v1.10.0

[risseraka]

Oh, indeed, just tested, didn't about that, thanks! (What a noob I am...)

What about my first commit? Mind if I open another PR with only the styling cleanup commit?