Update options list and function names

Functions changed from snake_case to lowerCamelCase
Merge pull request #67 from lid/patch-1

Update options list and function names
Merge branch 'develop'
Merge pull request #99 from sublimator/develop

Test we don't compute floating point median Fee
Fix fractional transaction fee
[FEATURE] offline vault client tests
bug fixes and documentation
[CHORE] offline tests for vault client
Merge branch 'feature/nock' into develop
[CHORE] vault client test for blob creation
[CHORE] use strict equal on vault tests
[CHORE] change randomBytes to 256 for vault test
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.
[FIX] vault-test: increase entropy from randomBytes

When running vault-test.js alone, the entropy was insufficient
for the seed generator.  Entropy must be added elsewhere when
the full test suite is run.
[FIX] vault client: account registration using lowercase version of username

also added username validation with rules from ripple trade client