bump version
feat(conventional-changelog): add changelog support
style(Gruntfile): fix indentation
feat(devtools): devtools integration
chore(background-page): add background page

Connection is not working
chore(Readme): change copyright uri
fix(manifest): background scripts are array in manifest
chore(postMessage): send js code from app to background page
chore(storage): disable chrome local storage
chore(): bump version
chore(): add screen v0.3.0
chore(): add gif
chore(manifest): remove browser actions
chore(): resolve merge conflict