Updated Readme and added example usage

Author: riggaroo

README.md

@@ -1,2 +1,44 @@
 # MaterialIntroTutorial
-Library demonstrating a material intro tutorial much like the ones on Google Sheets
+Android Library demonstrating a material intro tutorial much like the ones on Google Sheets
+
+This library shows a help or introduction tutorial into your application. Its inspired by the one in the Google Sheets Android app. 
+The help tutorial takes the background colour set for each page and when scrolling between the two pages, the two colours will fade into one another.
+
+
+# Example Usage
+
+Add the following into your build.gradle:
+
+    compile "za.co.riggaroo.materialhelptutorial:material-tutorial:1.0.0"
+
+In your activity, create a list of TutorialItems (set the title, subtitle, background colour and image drawable int). Pass them onto the MaterialTutorialActivity and start the activity for result.
+
+    public void loadTutorial() {
+        Intent mainAct = new Intent(this, MaterialTutorialActivity.class);
+        mainAct.putParcelableArrayListExtra(MaterialTutorialActivity.MATERIAL_TUTORIAL_ARG_TUTORIAL_ITEMS, getTutorialItems(this));
+        startActivityForResult(mainAct, REQUEST_CODE);
+
+    }
+
+    private ArrayList<TutorialItem> getTutorialItems(Context context) {
+        TutorialItem tutorialItem1 = new TutorialItem(context.getString(R.string.slide_1_african_story_books), context.getString(R.string.slide_1_african_story_books_subtitle),
+                R.color.slide_1, R.drawable.tut_page_1_front,  R.drawable.tut_page_1_background);
+
+        ...
+
+        ArrayList<TutorialItem> tutorialItems = new ArrayList<>();
+        tutorialItems.add(tutorialItem1);
+        ...
+
+        return tutorialItems;
+    }
+
+You should see a tutorial like below:
+![](example-usage.gif)
+
+This library is using the following:
+- CirclePageIndicator
+- UniversalImageLoader
+- Percent Support Library
+
+