should use 'readwrite' when giving all permissions
Update readme to point to marionette extension repo
add pypi info to readme
don't need to pin version
add generate_app as a function
update docs
Make install_app timeout an argument
Merge pull request #1 from dminor/install-app-timeout

Make install_app timeout an argument
update version number
add uninstall feature
Don't format test name when uninstalling via name
Remove check to see if app exists in /data/local
Merge pull request #2 from dminor/remove-uninstall-check-if-installed

Remove check to see if app exists in /data/local/webapps when uninstalling
Add audio-publicnotification permission
Merge pull request #3 from dminor/fix-permissions

Add audio-channel-publicnotification permission
update docs
Add downloads permission
Merge pull request #4 from dminor/add-downloads-permission

Add downloads permission
Add option to launch app
Address ato's review