Release 3.31.0 rc1

### 11/12/2014

### 3.31.0

### Fixed Bugs:
- Config file overwriting file issues
- Replaced database.example.json with database.json

### Added Features
- Support for memos and invoice_id fields
- Mark unconfirmed payments pending
- Associate ripple addresses and ripple transactions in database
- Add direction to ripple transactions (to-ripple, from-ripple)
- Add invoice_id to external transactions
- Validate Ripple Address using validator
- Commandline interface for seeding ripple records
- Enabled sqlite in memory and sqlite persistent connectors