Merge pull request #9 from ripple/master

Catching up to master
[DOC] tx_format revisions & related rippled submit/sign tweaks
Merge pull request #71 from mDuo13/gh-pages

Updates to tx_format
[DOC] tx_format revisions as per pull request #72
[DOC] tx_format - alphabetized and clarified AccountTxnID, added Creating Accounts section.
[TASK] REST API Tool - remove redundant test accts warning
Merge pull request #73 from mDuo13/gh-pages

Small revisions in tx_format and rest tool
Merge pull request #74 from ripple/gh-pages

Dev Portal from Staging to Master for 10/3 push