Fix sensor documentation to use sensor-name argument
Add clear steps for authoring and debugging a sensor
Add reference to packs doc
Set versions to 0.6.0
Merge pull request #842 from StackStorm/move_to_0.6.0

Set versions to 0.6.0
Urlencode query params.
Update versions, fix URLs
Merge pull request #839 from StackStorm/sensor_doc_update

Fix sensor documentation to use sensor-name argument
Merge pull request #843 from StackStorm/encode-url-params

Urlencode query params.
Merge branch 'master' into DOCS/update_versions_badge

Conflicts:
	docs/source/conf.py
Merge pull request #844 from StackStorm/DOCS/update_versions_badge

Update versions, fix URLs
Support to upgrade virtualenv.
Fix: Webhook docs should refer to API URL now
Merge pull request #845 from StackStorm/setup-venv-upgrade

Support to upgrade virtualenv.
Webhook APIs are versioned
Docs must refer to versioned st2 URLs
Mistral should use versioned st2 APIs for callbacks
Merge pull request #846 from StackStorm/webhooks_rules_docs_fix

Webhook docs should refer to API URL now
Merge pull request #847 from StackStorm/api_versions_in_docs

Docs must refer to versioned st2 URLs
Merge pull request #848 from StackStorm/mistral_callback_use_versioned_st2_api

Mistral should use versioned st2 APIs for callbacks