#6, добавлена возможность удаления цитат

src/components/Quote/Quote.js

@@ -9,7 +9,7 @@ const Quote = props => {
                 <CardBody>
                     <CardTitle className='text-uppercase font-weight-bold'>{props.author}</CardTitle>
                     <CardText>{props.text}</CardText>
-                    <Button className='mr-3' color='danger'>Delete</Button>
+                    <Button onClick={props.delete} className='mr-3' color='danger'>Delete</Button>
                     <Button color='info'>Edit</Button>
                 </CardBody>
                 <CardFooter className='text-muted'>{props.category}</CardFooter>

src/containers/Quotes/Quotes.js

@@ -22,16 +22,31 @@ const Quotes = props => {
         , [props.match.params.category]);
 
 
+    const deleteQuote = (id) => {
+        axios.delete(`/quotes/${id}.json`)
+            .then(() => {
+                let allQuotes = {...quotes};
+                delete allQuotes[id];
+                setQuotes(allQuotes)
+            })
+    }
+
+
+
     const printQuotes = () => {
         return Object.keys(quotes).map(quote => {
             return <Quote author={quotes[quote].author}
                           text={quotes[quote].text}
                           category={quotes[quote].category}
                           key={quote}
+                          delete={() => deleteQuote(quote)}
             />
         })
     };
 
+
+
+
     return (
         <div className='Quotes'>
             {