Create README.md

README.md

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+# SDP-Compose: a scalable size unit for Jetpack Compose
+
+Did you miss [SDP](https://github.com/intuit/sdp) library from XML world? SDP-Compose bring to you SDP in your Jetpack Compose project.
+
+Bonouce tip: You don't need [SSP](https://github.com/intuit/ssp) library, SDP-Compose have it too!
+
+# Usage
+
+```kotlin
+@Preview(showBackground = true)
+@Composable
+fun Greeting(name: String = "Android") {
+    Text(
+        text = "Hello $name!",
+        color = Color.White,
+        fontSize = 16.ssp,
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(16.sdp)
+            .clip(RoundedCornerShape(16.sdp))
+            .background(Teal200)
+            .padding(16.sdp),
+    )
+}
+```
+
+# Setup