docs: add README.md and update form submission logic (#21)

This commit updates the README.md with project details, including features, technologies, installation instructions, and project structure.
- It also includes a description of the app, features like free-text input, sentiment selection, submitting content to a server, and displaying a Snackbar.
- It updates the form submission logic in `App.kt` to delay showing the "Feedback sent" Snackbar by 1 second.

Closes #2

Reviewed-on: #21
Co-authored-by: Ben Martin <ben.martin@sky.uk>
Co-committed-by: Ben Martin <ben.martin@sky.uk>

README.md

@@ -1,14 +1,39 @@
-This is a Kotlin Multiplatform project targeting Android, iOS.
+# Bob -- The Handy Feedback App
 
-* `/composeApp` is for code that will be shared across your Compose Multiplatform applications.
-  It contains several subfolders:
-  - `commonMain` is for code that’s common for all targets.
-  - Other folders are for Kotlin code that will be compiled for only the platform indicated in the folder name.
-    For example, if you want to use Apple’s CoreCrypto for the iOS part of your Kotlin app,
-    `iosMain` would be the right folder for such calls.
+This project is a simple Kotlin Multiplatform Application that allows users to enter free-text and
+submit the content to a server over HTTP. It also includes a form with sentiment selection and
+displays a Snackbar whenever the submit button is pressed.
 
-* `/iosApp` contains iOS applications. Even if you’re sharing your UI with Compose Multiplatform, 
-  you need this entry point for your iOS app. This is also where you should add SwiftUI code for your project.
+## Features
 
+- Free-text input form
+- Sentiment selection using FilterChips
+- Submit content to a server using Retrofit
+- Display Snackbar on form submission
 
-Learn more about [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html)…
+## Technologies Used
+
+- Kotlin
+- Jetpack Compose
+- Retrofit
+- Gradle
+
+## Getting Started
+
+### Installation
+
+1. Download the latest release from
+   the [releases page](https://git.brmartin.co.uk/bob/mobile-application/releases)
+2. Install the application following the on-screen instructions.
+
+### Usage
+
+1. Run the application on an Android emulator or a physical device.
+2. Select a sentiment using the FilterChips.
+3. Enter your text in the provided text field.
+4. Press the submit button to send the content to the server.
+
+### Project Structure
+
+- `composeApp/src/commonMain/kotlin/uk/sky/bob/application/App.kt`: Main Compose UI and form
+  submission logic.

composeApp/src/commonMain/kotlin/uk/sky/bob/application/App.kt

@@ -31,6 +31,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import org.jetbrains.compose.ui.tooling.preview.Preview
 
@@ -85,7 +86,10 @@ fun App() {
                         Button(onClick = {
                             sentiment.value = Sentiment.HAPPY
                             comment = TextFieldValue("")
-                            scope.launch { scaffoldState.snackbarHostState.showSnackbar("Feedback sent") }
+                            scope.launch {
+                                delay(1000)
+                                scaffoldState.snackbarHostState.showSnackbar("Feedback sent")
+                            }
                         }, modifier = Modifier.padding(8.dp)) {
                             Icon(Icons.AutoMirrored.Filled.Send, contentDescription = "Send")
                         }