add keys to snake case fn

Merge pull request #1 from idapgroup/feature/keys-to-snake-case

add keys to snake case fn

1.0.1

simplify types

1.0.0

added cleanObject, isObject fns, simplify types

0.2.1

added commonJs and esnext build

0.1.6

added support empty arrays to formData

0.1.5

Implements object to form data and object to url params functions