add raise SystemExit
fix exit_code to 1
Merge pull request #49 from item4/cli/upgrade

CLI: fix bug at cliche upgrade
add EnvironmentContext to run command
use app_context
test history on travis
Merge pull request #48 from item4/cli/history

CLI: fix bug at setup.py - history
add dependency
add index page
remove temporary index page
add User model
add user action (logout)
add social provider support
add docs
make alembic patch
split web test utils
delete wrong test
basical index test
use ReST emphasis
change description