Add Ctrl+W shortcut to close/hide window
Add Ctrl+W shortcut to close/hide window

Close #52

mattermost/desktop,yuya-oc/desktop,jnugh/desktop,mattermost/desktop,yuya-oc/desktop,yuya-oc/electron-mattermost,jnugh/desktop,mattermost/desktop,St-Ex/desktop,mattermost/desktop,yuya-oc/electron-mattermost,St-Ex/desktop,St-Ex/desktop,yuya-oc/electron-mattermost,mattermost/desktop,yuya-oc/desktop,jnugh/desktop