get-paths & get-orderbook added

v0.1.0-5

[*] fixed page-aware serializers (offers & paths)

Bug fix

[*] fixed empty operationResultCode error

Now it's possible to remove offers

--manage-offer is used to create and delete offers. With the difference that to delete an offer one should point out --offers-id and set amount to 0

Create/List offers

Added methods to create and retrieve offers for an account

Initial release

v0.1.0-1

[*] README update