Update README.md

README.md

@@ -3,7 +3,7 @@
 [ ![Download](https://api.bintray.com/packages/mulham-raee/maven/horizontal-calendar/images/download.svg) ](https://bintray.com/mulham-raee/maven/horizontal-calendar/_latestVersion)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
-A horizontal calendar view for Android
+A material horizontal calendar view for Android based on `RecyclerView`.
 
 ![demo](/art/demo.gif)
 
@@ -94,6 +94,53 @@ horizontalCalendar.setCalendarListener(new HorizontalCalendarListener() {
         });
 ```
 
+## Customization
+You can customize it directly inside your layout:
+
+```xml
+<devs.mulham.horizontalcalendar.HorizontalCalendarView
+            android:id="@+id/calendarView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/colorPrimary"
+            app:textColorNormal="#bababa"
+            app:textColorSelected="#FFFF"
+            app:selectorColor="#c62828"   // default to colorAccent.
+            app:selectedDateBackground="#00ffffff"/>
+```
+
+Or you can do it programmatically in your Activity using the **Builder**:
+
+```java
+HorizontalCalendar horizontalCalendar = new HorizontalCalendar.Builder(this, R.id.calendarView)
+                .startDate(startDate.getTime())
+                .endDate(endDate.getTime())
+                .datesNumberOnScreen(5)   // Number of Dates cells shown on screen (Recommended 5)
+                .dayFormat("EEE")	  // WeekDay text format
+                .dayNumberFormat("dd")  // Date format
+                .textColor(Color.LTGRAY, Color.WHITE)    // Text color for none selected Dates, Text color for selected Date.
+                .selectedDateBackground(Color.TRANSPARENT)  // Background color of the selected date cell.
+                .selectorColor(Color.RED)   // Color of the selection indicator bar (default to colorAccent).
+                .build();
+```
+
+## Features
+- You can select a specific **Date** programmatically with the option whether to play the animation or not, with:
+```java
+horizontalCalendar.selectDate(Date date, boolean immediate); // set immediate to false to ignore animation.
+	// or simply
+horizontalCalendar.goToday(boolean immediate);
+```
+
+- Check if two dates' **days** are equal:
+```java
+horizontalCalendar.isDatesDaysEquals(Date date1, Date date2);
+```
+
+- Check if a date is contained in the Calendar:
+```java
+horizontalCalendar.contains(Date date);
+```
 ## Contributing
 Contributions are welcome, feel free to submit a pull request.