npm install -g git+https://git@github.com/aseemk/json5.git

Use JSON5. Don't use JSON.

Objects and arrays can have trailing commas
Object keys can be unquoted if they're valid identifiers
Strings can be single-quoted
Strings can be split across multiple lines
Numbers can be hexadecimal (base 16)
Numbers can begin or end with a (leading or trailing) decimal point.
Numbers can include Infinity and -Infinity.
Numbers can begin with an explicit plus (+) sign.
Both inline (single-line) and block (multi-line) comments are allowed.

http://json5.org/
https://github.com/aseemk/json5

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