add the BCH/MXN book

Remove STATUS enum in Order class for more flexibility

Signed-off-by: Victor <[email protected]>

Enable doc on gradle build

Signed-off-by: Victor <[email protected]>

Fix parameters error form currency withdrawal

Signed-off-by: Victor <[email protected]>

an order might not be immediately executed

Enable currencyWithdrawal method to allow withdraw any currency

Signed-off-by: Victor <[email protected]>

adding new books to apiv2

Merge branch 'apiv3'

Enable gradle into the project

Signed-off-by: Victor <[email protected]>

Check if given keys are null or empty

Check if given keys are null or empty, if it is the case a
BitsoApiException will be thrown.

Signed-off-by: Victor <[email protected]>