update comments

Author: Mohamed-Fadel

library/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 26
@@ -32,4 +33,3 @@ dependencies {
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
 }
 
-apply plugin: 'kotlin-android-extensions'

library/src/main/java/com/mohamedfadel91/mainthreadschedulerlib/DummyContentProvider.kt

@@ -23,6 +23,7 @@ class DummyContentProvider : ContentProvider() {
     }
 
     override fun onCreate(): Boolean {
+        // to post message to the mainThread...
         MainThreadScheduler.mainThreadHandler = Handler()
         return false
     }

library/src/main/java/com/mohamedfadel91/mainthreadschedulerlib/MainThreadScheduler.kt

@@ -6,13 +6,18 @@ import android.support.test.espresso.Espresso
 
 /**
  * Created by fadel on 17/03/18.
+ * This Class responsible for schedule functions or runnable
+ * objects to run as soon as MainThread become idle..
  */
 object MainThreadScheduler {
     internal var mainThreadHandler: Handler? = null
 
+    /**
+     * it post [unit] to run as soon as MainThread become Idle..
+     */
     fun scheduleWhenIdle(unit: () -> Unit) {
         val block: () -> Unit = {
-            Thread(Runnable {
+            Thread({
                 Espresso.onIdle()
                 mainThreadHandler?.post(unit)
             }).start()
@@ -29,9 +34,12 @@ object MainThreadScheduler {
         }
     }
 
+    /**
+     * it post [runnable] to run as soon as MainThread become Idle..
+     */
     fun scheduleWhenIdle(runnable: Runnable) {
         val block: () -> Unit = {
-            Thread(Runnable {
+            Thread({
                 Espresso.onIdle()
                 mainThreadHandler?.post(runnable)
             }).start()