Slightly improved the way we delay encoding to type-specific functions
Improve _json-decode--string

Handle the escaping of \” and and finds the right end quote (the first
quote that is not escapes)

With this changes we have
`json_decode(‘“test\\\”test”’)` equals the result of
`JSON.parse(“test\\\”test”)` and is `“test”test”
Add new file to grunt
Merge pull request #25 from FWeinb/improve-string-decoder

Improve string decoder