Added checkNonEmptyStringSW(), checkNonEmptyStringNSW(), checkObject(), isObject(), checkJSONValue(); Updated checkArray(); Added method comments.
Added checkNonEmptyStringSW(), checkNonEmptyStringNSW(), checkObject(), isObject(), checkJSONValue(); Updated checkArray(); Added method comments.

asukakenji/achievement-challenge,asukakenji/achievement-challenge,asukakenji/achievement-challenge