add HowPack

README.md

@@ -130,22 +130,50 @@ fn  main(){
 ```
 
 
+#### Split Log(ByLogDate)
 
-#### Split Log(.log packer)
+```rust
+use fast_log::config::Config;
+use fast_log::plugin::file_split::{PackType, KeepType, DateType, HowPack};
+use std::thread::sleep;
+use std::time::Duration;
+use fast_log::plugin::packer::LogPacker;
+
+fn main() {
+    //file_path also can use '"target/logs/test.log"'
+    fast_log::init(Config::new().chan_len(Some(100000)).console().file_split(
+        "target/logs/",
+        HowPack::new(PackType::ByDate(DateType::Day)),
+        KeepType::KeepNum(2),
+        LogPacker {},
+    )).unwrap();
+    for _ in 0..60 {
+        sleep(Duration::from_secs(1));
+        log::info!("Commencing yak shaving");
+    }
+    log::logger().flush();
+    println!("you can see log files in path: {}", "target/logs/")
+}
+
+```
+
+
+#### Split Log(ByLogSize)
 
 ```rust
-use fast_log::plugin::file_split::RollingType;
+use fast_log::config::Config;
 use fast_log::consts::LogSize;
 use fast_log::plugin::packer::LogPacker;
+use fast_log::plugin::file_split::{PackType, KeepType, HowPack};
 
 #[test]
 pub fn test_file_compation() {
     fast_log::init(Config::new()
         .console()
         .chan_len(Some(100000))
         .file_split("target/logs/",
-                    LogSize::MB(1),
-                    RollingType::All,
+                    HowPack::new(PackType::BySize(LogSize::MB(1))),
+                    KeepType::All,
                     LogPacker{})).unwrap();
     for _ in 0..200000 {
         info!("Commencing yak shaving");