update some test for new methods

README.md

@@ -87,59 +87,59 @@ some = change val
 - Get integer
 
 ```go
-age := config.Int("age")
+age := ini.Int("age")
 fmt.Print(age) // 100
 ```
 
 - Get bool
 
 ```go
-val := config.Bool("debug")
+val := ini.Bool("debug")
 fmt.Print(val) // true
 ```
 
 - Get string
 
 ```go
-name := config.String("name")
+name := ini.String("name")
 fmt.Print(name) // inhere
 ```
 
 - Get section data(string map)
 
 ```go
-val := config.StringMap("sec1")
+val := ini.StringMap("sec1")
 fmt.Println(val) 
 // map[string]string{"key":"val0", "some":"change val", "stuff":"things", "newK":"newVal"}
 ```
 
 - Value is ENV var
 
 ```go
-value := config.String("shell")
+value := ini.String("shell")
 fmt.Printf("%q", value)  // "/bin/zsh"
 ```
 
-- Get value by key path
+- **Get value by key path**
 
 ```go
-value := config.String("sec1.key")
+value := ini.String("sec1.key")
 fmt.Print(value) // val0
 ```
 
 - Use var refer
 
 ```go
-value := config.String("sec1.varRef")
+value := ini.String("sec1.varRef")
 fmt.Printf("%q", value) // "val in default section"
 ```
 
 - Setting new value
 
 ```go
 // set value
-config.Set("name", "new name")
-name = config.String("name")
+ini.Set("name", "new name")
+name = ini.String("name")
 fmt.Printf("%q", value) // "new name"
 ```
 
@@ -189,7 +189,13 @@ type Options struct {
 }
 ```
 
-- setting options
+- setting options for default instance
+
+```go
+ini.WithOptions(ini.ParseEnv,ini.ParseVar)
+```
+
+- setting options with new instance
 
 ```go
 cfg := ini.New()

ini.go

@@ -165,6 +165,12 @@ func IgnoreCase(opts *Options) {
 	opts.IgnoreCase = true
 }
 
+// GetOptions get options info.
+// Notice: return is value. so, cannot change Ini instance
+func GetOptions() Options {
+	return dc.Options()
+}
+
 // Options get options info.
 // Notice: return is value. so, cannot change Ini instance
 func (c *Ini) Options() Options {

ini_test.go

@@ -357,6 +357,14 @@ func TestOther(t *testing.T) {
 	err := ini.LoadStrings(iniStr)
 	st.Nil(err)
 
+	ns := ini.SectionKeys(false)
+	st.Contains(ns, "sec1")
+	st.NotContains(ns, ini.GetOptions().DefSection)
+
+	ns = ini.SectionKeys(true)
+	st.Contains(ns, "sec1")
+	st.Contains(ns, ini.GetOptions().DefSection)
+
 	conf := ini.Default()
 
 	// export as INI string