Update README

Author: t4t5

README.md

@@ -69,19 +69,15 @@ sweetAlert({
 A prompt modal where the user's input is logged:
 
 ```javascript
-sweetAlert({
-  title: "Are you sure?",
-  text: "You will not be able to recover this imaginary file!",
-  type: "warning",
+sweerAlert({
+  title: "An input!",
+  text: 'Write something interesting:',
+  type: 'input',
   showCancelButton: true,
-  confirmButtonColor: "#DD6B55",
-  confirmButtonText: "Yes, delete it!",
   closeOnConfirm: false,
-  html: false
-}, function(){
-  swal("Deleted!",
-  "Your imaginary file has been deleted.",
-  "success");
+  animation: "slide-from-top"
+}, function(inputValue){
+  console.log("You wrote", inputValue);   
 });
 ```
 
@@ -111,7 +107,7 @@ If you want to contribute:
 ```
 npm install
 ```
-to install the dependencies and make Gulp automatically minify the SCSS and JS-files.
+to install the dependencies. Then run ```gulp``` while working to automatically minify the SCSS and JS-files.
 
 - After you're done, make a pull request and wait for approval! :)