Improved documentation.

README.md

@@ -13,7 +13,7 @@ go get gopkg.in/yaml.v3
 1. Install **config** library:
 
 ```sh
-go get github.com/eschao/config
+git@git.mousesoft.ru:ms/config.git
 ```
 
 ## Usage
@@ -41,6 +41,7 @@ Like JSON, Yaml, **config** uses tags to define configurations:
 * int8, int16, int, int32, int64
 * uint8, uint16, uint, uint32, uint64
 * float32, float64
+* time.Duration
 * slice type. e.g: []string, []int ...
   
 #### 2. Defines **default** values
@@ -287,33 +288,49 @@ Examples:
 Then, you can parse as below:
 
 ```golang
- dbConfig := Database{}
+dbConfig := Database{}
  
- // parse default values
- if err := config.ParseDefault(&dbConfig); err != nil {
-   // error handling
- }
+// parse default values
+if err := config.ParseDefault(&dbConfig); err != nil {
+  // error handling
+}
 
- // parse configuration file from command line
- err := config.ParseConfig(&dbConfig, "c")
+cmd := config.NewCLI("")
+if err := cmd.Init(&dbConfig); err != nil {
+  // error handling
+}
+
+// capture cli flags
+args := cmd.Capture(os.Args)
+
+// parse cli flags of application, urfave for example
+flagSet.Parse(args)
+
+// parse captured cli flags of config
+if err := cmd.Parse(cmd.Args); err != nil {
+  // error handling
+}
+
+// parse configuration file from command line
+err := config.ParseConfig(&dbConfig, "c")
  
- // parse default configurations
- if err != nil {
-   err = config.ParseConfigFile(&dbConfig), "")
- }
+// parse default configurations
+if err != nil {
+  err = config.ParseConfigFile(&dbConfig), "")
+}
  
- // parse environment variables
- if err != nil {
-   err = config.ParseEnv(&dbConfig)
- }
+// parse environment variables
+if err != nil {
+  err = config.ParseEnv(&dbConfig)
+}
  
- // parse command line
- if err != nil {
-   err = config.ParseCli(&dbConfig)
- }
+// parse command line
+if err != nil {
+  err = config.ParseCli(&dbConfig)
+}
  
- // check if all required configurations are set
- ...
+// check if all required configurations are set
+...
 ```
 
 You don't need to call all of them. Just invokes parsing function that your need.