making tests run with 1.6
piston 0.2.3
Revert "piston 0.2.3"

This reverts commit 1c880a75ed2021e9bcff8ccb1226015f4c7d8f14.
hack to make API CSRF exempt
actually make exempt
kill piston and unused backends
voicemail sms handling is not a thing anymore
Merge branch 'feature/issue-11-kill-piston' into develop
Merge branch 'develop' into feature/issue-10-upgrade-to-django-1.6

Conflicts:
	txtalert/apps/api/tests.py
	txtalert/apps/api/urls.py
Merge branch 'feature/issue-10-upgrade-to-django-1.6' into develop
kill silly coverage, use Travis
update docs
Merge branch 'feature/issue-12-kill-unused-code' into develop
fix headers
Merge branch 'develop' into feature/issue-7-auto-complete-in-admin

Conflicts:
	.gitignore
	setup.py
	txtalert/settings.py
	txtalert/urls.py