Merge branch 'release/v0.0.1'
Merge branch 'develop'
Update REASON.md
move getting logger to BitherjApplication
remove direct Android log references
remove Android reference from PeerManager
remove Android log reference from PrivateKeyUtil
remove Android reference from Utils
Merge pull request #1 from nining/remove-android-refs-prep

Remove android references preparation
merge master
performance
add getLogDir
Merge branch 'develop' of github.com:bither/bitherj into develop