Merge pull request #101 from shekenahglory/develop

Offline vault client tests and improved coverage
Remove dedupe plugin from minified webpack build
Merge branch 'develop' of https://github.com/ripple/ripple-lib into develop
Add build script
[FIX] Blobvault: Include domain on account creation call

Blobvault now requires a domain field to be passed on the account creation request.
[FEATURE] vault client: create encrypted blob decrypt key if missing

if the key is missing, upon login the key will be automatically
generated and saved to the blobvault.