In a large bowl, combine lime juice with honey, salt and a bit of chopped mint leaves. Whisk to combine. Add in strawberries, blueberries and peaches. You can make the salad ahead of time before serving and set it in the fridge at this point. Right before serving, chop bananas and avocado, add to salad, and toss to coat in the lime juice mixture. Garnish with additional fresh mint.