Merge pull request #18 from ParitoshBh/master

Updated files to include new method and image optimization

Author: iammert

README.md

@@ -10,6 +10,7 @@ We saw this kind of showcase on [Fabulous App](http://www.thefabulous.co/) and w
 ```java
 new MaterialIntroView.Builder(this)
                 .enableDotAnimation(true)
+				.enableIcon(false)
                 .setFocusGravity(FocusGravity.CENTER)
                 .setFocusType(Focus.MINIMUM)
                 .setDelayMillis(500)
@@ -84,6 +85,9 @@ dependencies {
 .enableDotAnimation(true) //Shows dot animation center of focus area
 ```
 ```java
+.enableIcon(false) //Turn off helper icon, default is true
+```
+```java
 .performClick(true) //Trigger click operation when user click focused area.
 ```
 ```java

materialintro/src/main/res/drawable/icon_dotview.png

@@ -50,6 +50,7 @@ public void onClick(View v) {
     private void showIntro(View view, String usageId, String text){
         new MaterialIntroView.Builder(getActivity())
                 .enableDotAnimation(true)
+                //.enableIcon(false)
                 .setFocusGravity(FocusGravity.CENTER)
                 .setFocusType(Focus.MINIMUM)
                 .setDelayMillis(200)