Update README.md

Author: amitjangid80

README.md

@@ -268,6 +268,31 @@ dbHelper.executeSelectQuery(tableName, values, hasConditions, conditionalValues)
 dbHelper.getRecordCount(tableName, values, hasConditions, conditionalValues);
 ```
 
+### DatePickerFragment
+
+>**Use this date picker fragment for selecting date.**
+
+```java
+
+DatePickerFragment datePickerFragment = new DatePickerFragment();
+
+/**
+ * 2018 October 24 - Wednesday - 03:34 PM
+ * show date picker dialog method
+ *
+ * this method will show the date picker dialog fragment
+ *
+ * @param context - context of the application
+ * @param selectedDate - interface of date picker fragment for getting the selected date value
+ * @param selectedDateFormat - format in which you want the date.
+ *                             Example: yyyy-MM-dd hh:mm:ss
+ *
+ * @param isCurrentDateMin - pass true to set current date as minimum date else pass false.
+**/
+datePickerFragment.showDatePickerDialog(this, this, "yyyy/MM/dd HH:mm:ss", false);
+
+```
+
 ### SquareImageView
 
 >**Use it the way you use ImageView in android. This makes your image in a perfect square shape.**