AccountsController.apxc
public class AccountsController {
    @AuraEnabled public static Account          getAccount(){
        return (Account) Database.query( ' SELECT Name,Type,NumberOfEmployees,TickerSymbol,Phone FROM Account  ' )[0];
    }
    @AuraEnabled public static Account          saveAccount(Account account){
        upsert account;
        return account;
    } 
}

AccountsListController.js
({
    init : function(component, event, helper) {
        console.log('init');
        var action2 = component.get("c.getAccount");        
        action2.setCallback(this, function(response) {
            console.log(response.getReturnValue());
            component.set("v.account", response.getReturnValue());
        });
        $A.enqueueAction(action2);
    }, 
    save : function(component, event, helper) {
        console.log('save:1');
        var action = component.get("c.saveAccount");
        var account = component.get("v.account");
        action.setParams({"account": account});
        action.setCallback(this, function() {  console.log('SAVED.');  } );
        $A.enqueueAction(action);
        console.log('save:end');
    },
})

({
   //Fetch the accounts from the Apex controller
  getAccountList: function(component) {
    var action = component.get("c.getAccounts");

    //Set up the callback
    var self = this;
    action.setCallback(this, function(actionResult) {
        component.set("v.accounts", actionResult.getReturnValue());            
    });
    $A.enqueueAction(action);
  }   
})

AccountList.cmp
<aura:component controller="AccountsController" implements="forceCommunity:availableForAllPageTypes">
    <aura:handler name="init" value="{!this}" action="{!c.init}"/>
    <aura:attribute name="account"  type="Account" />
    <h1>Test</h1>
    <form>
         
        <ui:inputText aura:id="client"
            label="{!$ObjectType.Account.fields.Name.Label}"
            class="form-control"
            value="{!v.account.Name}"
            placeholder="Name"
        />
        <ui:inputText aura:id="client"
            label="{!$ObjectType.Account.fields.Type.Label}"
            class="form-control"
            value="{!v.account.Type}"
            placeholder="Type"
        />
        <ui:inputText aura:id="client"
            label="{!$ObjectType.Account.fields.NumberOfEmployees.Label}"
            class="form-control"
            value="{!v.account.NumberOfEmployees}"
            placeholder="NumberOfEmployees"
        />
        <ui:inputText aura:id="client"
            label="{!$ObjectType.Account.fields.TickerSymbol.Label}"
            class="form-control"
            value="{!v.account.TickerSymbol}"
            placeholder="TickerSymbol"
        />
        <ui:inputText aura:id="client"
            label="{!$ObjectType.Account.fields.Phone.Label}"
            class="form-control"
            value="{!v.account.Phone}"
            placeholder="Phone"
        />
        <br />
        <ui:button class="form-control" aura:id="button" label="Save" press="{!c.save}"/>
        <br />
    <br />
       
    </form>
</aura:component>