Update README.md

FSCalendar/FSCalendar+IBExtension.h

@@ -6,7 +6,7 @@
 //  Copyright © 2016 Wenchao Ding. All rights reserved.
 // 
 //  注意: 这些方法仅仅为了在IB中使用，不建议直接调用。这些方法在calendar.appearance中使用。如: calendar.appearance.eventDefaultColor
-//  Warning: For IB usage only. Directly calling these methods is NOT RECOMMENDED. Use calendar.appearance to call these methods instead
+//  Warning: For IB usage only. Directly calling these methods is NOT RECOMMENDED. Use calendar.appearance instead.
 
 
 #import "FSCalendar.h"

FSCalendar/FSCalendar.h

@@ -10,13 +10,10 @@
 //
 //  FSCalendar is a superior awesome calendar control with high performance, high customizablility and very simple usage.
 //
-//  @warning All NSDate instances used in the calendar should be managed by the DateTools category. See FSCalendar+DateTools.
-//
 //  @see FSCalendarDataSource
 //  @see FSCalendarDelegate
 //  @see FSCalendarDelegateAppearance
 //  @see FSCalendarAppearance
-//  @see FSCalendar+DateTools
 //
 
 #import <UIKit/UIKit.h>

README.md

@@ -202,6 +202,18 @@ NSLog(@"Date is %@", string);
 
 ```objc
 self.gregorian = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
+```
+* Get component of NSDate
+
+```objc
+NSInteger era = [self.gregorian component:NSCalendarUnitEra fromDate:date];
+NSInteger year = [self.gregorian component:NSCalendarUnitYear fromDate:date];
+NSInteger month = [self.gregorian component:NSCalendarUnitMonth fromDate:date];
+NSInteger day = [self.gregorian component:NSCalendarUnitDay fromDate:date];
+NSInteger hour = [self.gregorian component:NSCalendarUnitHour fromDate:date];
+NSInteger minute = [self.gregorian component:NSCalendarUnitMinute fromDate:date];
+...
+
 ```
 
 * Get next **month**