diff --git a/.travis.yml b/.travis.yml
index 641e6286..e842c710 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,8 @@ language: csharp
 install:
 
  - sudo apt-get install nunit
+ - npm install -g codecov
+ - sudo apt-get install gcovr
  
 before_script:
 
@@ -10,4 +12,10 @@ before_script:
  
 script: 
 
- - make build-and-test
\ No newline at end of file
+ - make build-and-test
+ - gcc -fprofile-arcs -ftest-coverage -fPIC -O0 FindStackDirection.c -o FindStackDirection
+ - gcovr -r . --xml
+ - codecov --disable=gcov
+
+
+
diff --git a/FindStackDirection.c b/FindStackDirection.c
new file mode 100644
index 00000000..8fa66140
--- /dev/null
+++ b/FindStackDirection.c
@@ -0,0 +1,43 @@
+#include <stdio.h>
+
+// 重定义数据类型
+typedef unsigned char  UINT8;
+typedef signed   int   INT32;
+
+// 函数声明
+void FindStackDirection(void);
+
+INT32 main()
+{
+    FindStackDirection();
+
+    return 0; 
+}
+
+void FindStackDirection(void)
+{
+    UINT8  iStackAddr        = 0;        // 用于获取栈地址
+    static UINT8 *pStackAddr = NULL;     // 用于存放第一个iStackAddr的地址 
+
+    if (pStackAddr == NULL)              // 第一次进入
+    {                          
+        pStackAddr = &iStackAddr;        // 保存iStackAddr的地址
+        FindStackDirection();            // 递归 
+    }
+    else                                 // 第二次进入 
+    {  
+        if (&iStackAddr > pStackAddr)        // 第二次iStackDirection的地址大于第一次iStackDirection, 那么说明栈增长方向是向上的
+        {   
+            printf("Stack grows up!\n");
+        }
+        else if (&iStackAddr < pStackAddr)   // 第二次iStackDirection的地址小于第一次iStackDirection, 那么说明栈增长方向是向下的
+        {  
+            printf("Stack grows down!\n");
+        }
+        else
+        {
+            printf("Bad stack!\n");
+        }
+    }
+
+
diff --git a/Makefile b/Makefile
index 7f08c751..b271065f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,4 +7,5 @@ build-and-test:
 
 	xbuild src/Qiniu.sln
 
-	nunit-console bin/QiniuTests.dll
+	nunit-console  bin/QiniuTests.dll
+
diff --git a/README.md b/README.md
index 620601ba..8cc6b5e0 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # Qiniu (Cloud) C# SDK
 
+[![LICENSE](https://img.shields.io/github/license/qiniu/csharp-sdk.svg)](https://github.com/qiniu/csharp-sdk/blob/master/LICENSE)
+[![Build Status](https://travis-ci.org/qiniu/csharp-sdk.svg?branch=master)](https://travis-ci.org/qiniu/csharp-sdk)
+[![GitHub release](https://img.shields.io/github/v/tag/qiniu/csharp-sdk.svg?label=release)](https://github.com/qiniu/csharp-sdk/releases)
+[![Coverage Status](https://codecov.io/gh/qiniu/csharp-sdk/branch/master/graph/badge.svg)](https://codecov.io/gh/qiniu/csharp-sdk)
+
 ## 使用
 
 * 参考文档：[七牛云存储 C# SDK 使用指南](https://developer.qiniu.com/kodo/sdk/1237/csharp)