react login

	onLoginPressed(){
		this.setState({showProgress:true});
		var b = new buffer.Buffer(this.state.username +':'+ this.state.password);
		var encodedAuth = b.toString('base64');
		fetch('https://api.github.com/user',{
			headers:{
				'Authorization' : 'Basic' + encodedAuth
			}
		})
		.then((response)=>{
			return response.json();
		})
		.then((results)=>{
			console.log(results);
			this.setState({showProgress:false});
		})
	}