Updated documentation for prompt (#119)

* Updated documentation for prompt

* Fixed heading style

* Update prompt.md

Author: ikoevska

content/docs/en/elements/dialogs/prompt.md

@@ -1,35 +1,71 @@
 ---
 title: PromptDialog
 apiRef: https://docs.nativescript.org/api-reference/modules/_ui_dialogs_#prompt
-contributors: [MisterBrownRSA, rigor789]
+contributors: [MisterBrownRSA, rigor789, ikoevska]
 ---
 
-The PromptDialog allows you to prompt the user for input.
+The `prompt()` method shows a dialog with a single-line field for user input.
 
----
+The method is part of the [`dialogs` module](https://docs.nativescript.org/api-reference/modules/_ui_dialogs_).
 
-```javascript
-const dialogs = require('tns-core-modules/ui/dialogs')
+---
 
-module.exports = {
-  mounted() {
-    dialogs.prompt('How are you?', 'Amazing!')
-    .then(result => {
-      console.log(`Dialog result: ${result.result}, text: ${result.text}`)
-    })
-  }
-}
-```
+## Basic use
 
-The PromptDialog is also available globally, so instead of importing it from the dialogs module, you can simply call
+The `prompt()` method is available globally. You can call it anywhere in your app.
 
-```javascript
-prompt('How are you?', 'Amazing!')
+```JavaScript
+prompt('Your message to the user', 'Suggested user input')
 .then(result => {
   console.log(`Dialog result: ${result.result}, text: ${result.text}`)
 })
 ```
 
-anywhere in your code.
+## Configure dialog options
+
+```JavaScript
+prompt({
+  title: "Your dialog title",
+  message: "Your message",
+  okButtonText: "Your OK button text",
+  cancelButtonText: "Your Cancel button text",
+  defaultText: "Suggested user input",
+}).then(result => {
+  console.log(`Dialog result: ${result.result}, text: ${result.text}`)
+});
+```
+
+## Configure input type
+
+You can also configure the input type using `inputType`. You can choose between plain text (`text`), email-enabled input (`email`), and password-like hidden input (`password`).
+
+```JavaScript
+inputType: dialogs.inputType.text
+inputType: dialogs.inputType.email
+inputType: dialogs.inputType.password
+```
+
+**NOTE:** This option is not globally available and you need to require the `dialogs` module in your app before using `inputType`.
+
+```JavaScript
+const dialogs = require('tns-core-modules/ui/dialogs')
+```
+
+### Example
+
+```JavaScript
+const dialogs = require('tns-core-modules/ui/dialogs')
+
+prompt({
+  title: "Email Prompt",
+  message: "Provide your email address:",
+  okButtonText: "OK",
+  cancelButtonText: "Cancel",
+  defaultText: "[email protected]",
+  inputType: dialogs.inputType.email
+}).then(result => {
+  console.log(`Dialog result: ${result.result}, text: ${result.text}`)
+});
+```
 
-[> screenshots for=PromptDialog <]
+[> screenshots for=PromptDialog <]