worked on Dusting Sallings comments,

https://github.com/prataprc/collatejson/commit/d753d1223f20c5c1c7d981f0631d8fb0827267bf

- applied gofmt as well.

Benchmark results, after the modifications

BenchmarkEncodeInt       2000000               897 ns/op
BenchmarkDecodeInt       5000000               607 ns/op
BenchmarkDncodeSD        5000000               742 ns/op
BenchmarkDecodeSD        5000000               434 ns/op
BenchmarkEncodeLD        1000000              2006 ns/op
BenchmarkDecodeLD        1000000              1146 ns/op
BenchmarkEncode           100000             20836 ns/op
BenchmarkCompare        10000000               153 ns/op
BenchmarkDParVal          500000              6414 ns/op
BenchmarkTuqCollate       200000             10333 ns/op
BenchmarkParse             10000            100743 ns/op