highlight features and code snippets on readme

[drstonebraker]

e.g. error handling

protected routes?

custom validations

[drstonebraker]

callbacks?

[drstonebraker]

clean, modular, expressive code:

  componentWillReceiveProps(nextProps) {
    this.checkTeamChange(nextProps)
    this.checkChannelsChange(nextProps)
  }

  checkTeamChange (nextProps) {
    const oldTeamId = Number(this.props.match.params.teamId)
    const newTeamId = Number(nextProps.match.params.teamId)
    if (oldTeamId !== newTeamId) {
      this.resetDefaultTeamMembershipId(newTeamId)
    }
  }

  checkChannelsChange (nextProps) {
    const oldTeamChannels = this.props.teamChannels
    const newTeamChannels = nextProps.teamChannels
    if (oldTeamChannels !== newTeamChannels) {
      this.unsubscribeChannels(oldTeamChannels)
      this.subscribeChannels(newTeamChannels)
    }
  }