improved readme

README.md

@@ -152,7 +152,7 @@ total, err := engine.Count(&User{Name:"xlw"})
 ```
 
 
-##Execute SQL
+## Execute SQL
 
 Of course, SQL execution is also provided.
 
@@ -171,7 +171,7 @@ res, err := engine.Exec(sql, "xiaolun", 1)
 ```
 
 
-##Advanced Usage
+## Advanced Usage
 
 for deep usage, you should create a session, this func will create a database connection immediatelly
 
@@ -271,7 +271,7 @@ if err != nil {
 }
 ```
 
-##Mapping Rules 
+## Mapping Rules 
 
 <a name="mapping" id="mapping"></a>
 1.Struct and struct's fields name should be Pascal style, and the table and column's name default is SQL style.
@@ -321,12 +321,12 @@ type Userinfo struct {
 ```
 
 
-##Documents 
+## Documents 
 
 Please visit [GoWalker](http://gowalker.org/github.com/lunny/xorm)
 
 
-##FAQ 
+## FAQ 
 
 1.How the xorm tag use both with json?
   

README_CN.md

@@ -148,7 +148,7 @@ err := engine.Delete(&User{Id:1})
 total, err := engine.Count(&User{Name:"xlw"})
 ```
 
-##直接执行SQL语句
+## 直接执行SQL语句
 
 当然，如果你想直接使用SQL语句进行操作，也是允许的。
 
@@ -166,7 +166,7 @@ sql = "update userinfo set username=? where id=?"
 res, err := engine.Exec(sql, "xiaolun", 1) 
 ```
 
-##高级用法
+## 高级用法
 
 <a name="mapping" id="mapping"></a>
 更高级的用法，我们必须要使用session对象，session对象在创建时会立刻创建一个数据库连接。
@@ -315,11 +315,11 @@ type Userinfo struct {
 }
 ```
 
-##文档
+## 文档
 
 请访问 [GoWalker](http://gowalker.org/github.com/lunny/xorm) 查看详细文档
 
-##FAQ
+## FAQ
 
 1.问：xorm的tag和json的tag如何同时起作用？