[README] update

Author: KevinZonda

README.md

@@ -4,15 +4,18 @@ Command line to do git operation with FastGit.
 
 ## What works
 
-- Clone  
-*git clone GITHUB_URL* command had been tested in Windows 10(build 1809)
-
 - Stdout/stderr  
 Real-time display has been tested in Windows 10(build 1809)
 
+- Push  
+*`fgit push`* command had been tested in Windows 10(build 1809)
+
+- Clone  
+*`fgit clone GITHUB_URL`* command had been tested in Windows 10(build 1809)
+
 ## Preparation
 
-Before use fgit-go, install git by yourself. Add git to env PATH is also required.
+Before use fgit-go, install `git` by yourself. Add git to env PATH is also **required**.
 
 Download source code of fgit-go, build and run.
 
@@ -26,4 +29,37 @@ And, fgit-go is cross-platform.
 
 To clone, fgit-go just replaces url to FastGit url.
 
-To push, fgit-go modifies .git config temporarily.
+To push, fgit-go modifies .git config temporarily. Like
+
+```config
+[core]
+        repositoryformatversion = 0
+        filemode = false
+        bare = false
+        logallrefupdates = true
+        symlinks = false
+        ignorecase = true
+[remote "origin"]
+        url = https://github.com/A/B
+        fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+        remote = origin
+        merge = refs/heads/master
+```
+
+To
+
+```config
+[core]
+        repositoryformatversion = 0
+        filemode = false
+        bare = false
+        logallrefupdates = true
+        symlinks = false
+        ignorecase = true
+[remote "origin"]
+        url = https://hub.fastgit.org/A/B
+        fetch = +refs/heads/*:refs/remotes/origin/*
+[branch "master"]
+        remote = origin
+        merge = refs/heads/master