#300 Add Rep. Lankford.
gitignore updates
merged upstream
Updated to fix problems in issue #300 and previous pull request.

- Split form into two steps: first to validate ZIP, second to fill out
and submit the form.
- Removed telephone rule since it's not required and doesn't add anything.
- Changed the subject selector rules to match the option:value pattern.
Fixed spacing in YAML to align properly with tabs.
Merge pull request #573 from morganestes/master

[L000575] Add Rep. Lankford.