fix: boots 1.70

[moneroexamples]

The patch fixes issue with boost 1.70: #340

Patch is based on the patch submitted to other project: moneroexamples/onion-monero-blockchain-explorer@76a0efa

[mattn]

ping @ipkn

[4e554c4c]

get_io_service has been depreciated since at least 1.66[0] so i think it'd be pretty safe to switch this over without the macro

[0] https://www.boost.org/doc/libs/1_66_0/doc/html/boost_asio/reference/basic_stream_socket/get_io_service.html
related: #358

[tobegit3hub]

It seems the travis-ci still use libboost1.55-all-dev which fail the tests in the PR.

Ping @ipkn to fix for boost 1.7.

[mattn]

@ipkn If you are busy to maintenance crow, I can do help you.

[0x4ndy]

The latest version doesn't contain this fix, is the a plan to release a new crow_all.h?

[The-EDev]

@druc0d3s This repository has not been maintained for about 4 years. A few contributors and I are maintaining a fork here.

[0x4ndy]

@druc0d3s This repository has not been maintained for about 4 years. A few contributors and I are maintaining a fork here.

Great, I'm coming over! :-)