code: function int (type) {
    type === 'int' ? 'int256' : type
    var storageBytes = parseInt(type.replace('int', '')) / 8
    return new IntType(storageBytes)
  }
docs: Int decode the given @arg type
  
  @param {String} type - type given by the AST (e.g int256, int32)
  @return {Object} returns decoded info about the current type: { storageBytes, typeName}