Merge pull request stellar#78 from stellar/stellar-hd-wallet

stellar-hd-wallet

Generated snapshots from TravisCI for build 1056 on 2017-12-28-19:57:02

Update docs for ledger resource

travis: deploy snapshots on every commit to master (stellar#211)

modify travis configuration to deploy snapshots on every commit to master (beyond the previous tagged releases)
 
exclude non-linux bifrost from artifact build

Merge pull request stellar#81 from stellar/bifrost

Bifrost - alpha version

Make tls.certificate-file and tls.private-key-file required fields

Update travis tokens, attempting to get CI working in public

Fix build script invocation

Fixes archivist on 32-bit architectures (arm)

Fix build script invocation