Improve README

Author: skydoves

README.md

@@ -36,32 +36,24 @@ dependencies {
 }
 ```
 
-### SNAPSHOT 
-[![Bindables](https://img.shields.io/static/v1?label=snapshot&message=bindables&logo=apache%20maven&color=C71A36)](https://oss.sonatype.org/content/repositories/snapshots/com/github/skydoves/bindables/) <br>
-Snapshots of the current development version of Bindables are available, which track [the latest versions](https://oss.sonatype.org/content/repositories/snapshots/com/github/skydoves/bindables/).
-```Gradle
-repositories {
-   maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
-}
-```
-
 ## Setup DataBinding
 If you already use `DataBinding` in your project, you can skip this step. Add below on your `build.gradle` and make sure to use `DataBinding` in your project.
 ```gradle
 plugins {
-    ...
-    id 'kotlin-kapt'
+    ..
+    id('kotlin-kapt')
 }
 
 android {
-  ...
+  ..
   buildFeatures {
-      dataBinding true
+      dataBinding = true
   }
 }
 ```
 
 ## BindingActivity
+
 `BindingActivity` is a base class for Activities that wish to bind content layout with `DataBindingUtil`. It provides a `binding` property that extends `ViewDataBinding` from abstract information. The `binding` property will be initialized lazily but ensures to be initialized before being called `super.onCreate` in Activities. So we don't need to inflate layouts, setContentView, and initialize a binding property manually.
 
 ```kotlin